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I have an old offline PC football manager game that first hit the shelves more than two decades ago, running for Windows. The program itself still launches, but one core player substitution rule embedded in the gameplay no longer makes sense today. I need that single rule modified so the game lines up with modern-day expectations while leaving everything else intact. I have the exe file only without any original source code, so you may have to inspect or reverse-engineer the executable, trace the relevant logic, patch it, and then rebuild or wrap the binary (or find out relevant offset address) so it runs seamlessly on current Windows editions. No graphic, audio, or stability problems are present—this task is purely about updating that rule and ensuring the game behaves consistently after the change. Deliverable • A patched EXE (or an external patcher) that implements the new rule, plus brief notes outlining the change and how you achieved it (or find out the relevant offset address)
Project ID: 40476345
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36 freelancers are bidding on average $1,066 HKD for this job

Hello, I have carefully reviewed your requirements and understand you need an existing Windows football manager game analyzed and patched at the executable level to update a specific substitution rule while preserving all original gameplay and functionality. With 9+ years of experience in game development, reverse engineering, debugging, binary analysis, and legacy software modification, I can investigate the executable, identify the relevant game logic, patch the required behavior, and ensure compatibility with modern Windows systems without affecting stability or performance. You will get: Quality optimized work 100% client satisfaction Fast delivery Suitable pricing Unlimited revisions Complete NDA & IP protection (project security is our top priority) Estimated delivery You will receive a patched executable or external patcher, documented offset/location details, implementation notes, and a fully tested solution that preserves the original game experience while applying the updated rule. Come inbox & I will share relevant reverse-engineering and game modification portfolio projects. Let’s get started. Best regards, Sohaib Pasn Games
$1,120 HKD in 7 days
6.7
6.7

Hello Sir/MAM I am a skilled full stack developer. Having rich experience in Java , C++ , C , C# , Python , Eclipse , Sql , Mysql , .Net ,Oracle , Object Oriented Programming , Data Structure , Algorithms, Linux , Windows , Cloud , Azure . I have a perfect grip on “Artificial Intelligence” “Automation” , and work in “Machine Learning” Deep Learning ”. My track record as demonstrated in my 100% job completion and 5-star review rating showcases My ability to deliver exceptional results on time and with utmost quality I believe that my skill set makes me the ideal candidate for this project Please come on chat we will discuss more about this I will be waiting for your reply . Thanks and Best Regards
$1,120 HKD in 2 days
6.3
6.3

With over 15 years of developmental experience, I am confident in my ability to tackle the task of modernizing the rule in your legacy PC football manager game. My strong suit includes C and C# programming which are instrumental to inspecting and reversing an executable as old as yours. Patching, rebuilding, and wrapping binaries is something I have ample experience with; I can ensure your game runs seamlessly on the current Windows editions. I promise you that this rule change will not compromise the stability or functionality of any other aspect of the game. As committed to continued support, even after delivering the final product, I assure you that I will be available to troubleshoot any issues that may arise after the update. For what it's worth, I value clear communication throughout projects so that our ideas align, and there are no surprises along the way. You can count on 100% satisfaction from me for your project. I eagerly await working with you to bring a fresh and updated experience to your venerable football management game!
$240 HKD in 7 days
5.7
5.7

Hello there, I’ve read your project and I’m confident I can help modernize that single rule without touching the rest of the game. I’m a solo developer with deep experience in reverse engineering, Windows desktop patching, and safe binary edits. I’ll focus on identifying the exact logic path for the substitution rule inside the offline PC football manager and implement a clean, reversible patch that preserves gameplay and compatibility with current Windows versions. In similar projects I’ve examined executables, traced conditional logic, and delivered compact patchers or patched builds that maintain stability while enabling new behavior. I do not require source code and will document the approach, offsets or the patching method, so you can verify exactly what changed. I can deliver a patched EXE (or a lightweight patcher) with a short notes file, and I’ll align the change with modern-day substitution rules while keeping everything else intact. I’ll provide a clear timeline and leave room for testing on your setup. Best regards, Billy Bryan
$1,245 HKD in 1 day
3.6
3.6

Hi, I am a full-stack AI developer with 8 years of rich experience in software development, with a background in Windows desktop applications, legacy software debugging, and game logic modification. I am familiar with C, C++, C#, Windows desktop development, debugging, reverse engineering, binary analysis, EXE patching, software testing, game development, and compatibility testing on modern Windows systems. I can inspect the existing game executable, trace the substitution-rule logic, identify the relevant offset or function path, and provide either a patched EXE or an external patcher that updates only that rule while keeping the rest of the gameplay unchanged and stable. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$1,000 HKD in 7 days
3.2
3.2

As someone who has spent significant time specializing in C and C++ programming languages, a project like yours is right up my alley. I've had to navigate the world of reverse-engineering and patching numerous times, so not having the original source-code for your football manager game shouldn't be an issue. I fully understand the weight of maintaining stability and usability. As such, I assure you that my experience in software testing is thorough and meticulous. Apart from making the required rule modifications, I'll personally ensure that the game behaves consistently and remains as seamless as possible on current Windows editions. Lastly, not only am I skilled in debugging, but my high standards of performance set me apart. I am dedicated to delivering excellence at every step of the journey, meeting deadlines without compromising quality. So let's modernize this game experience together; choose me for a smooth, timely, and precisely-crafted solution.
$2,000 HKD in 2 days
3.3
3.3

As a seasoned programmer with an extensive background in C# and C++ programming, I am more than equipped to tackle this unique challenge. My experience stretches far beyond just traditional data analysis or machine learning tasks. I have a knack for reverse engineering and patching software, which matches perfectly with your project requirements. Furthermore, my proficiency with diverse toolsets such as Pandas, NumPy, Matplotlib, Seaborn, and Plotly will prove invaluable in analyzing the legacy code of your game, tracing its relevant logic, and isolating the player substitution rule for modification.
$1,120 HKD in 1 day
2.5
2.5

Hello, I am available now. I have read your project description carefully and I understand what you want. 300% Confidence!!! I have 7+ years of experience in C# Programming, Software Testing. I have completed similar projects. Please contact me. Best regards, Steven
$1,100 HKD in 7 days
2.0
2.0

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience with Windows desktop debugging, legacy game analysis, binary inspection, and controlled patching where original source code is not available. I bring strong expertise in C/C++, C#, Windows Desktop, Reverse Engineering, Debugging, Software Testing, Game Development, and legacy software maintenance. One of the key challenges in projects like this is locating the exact gameplay rule inside the executable, changing only that substitution logic, and ensuring the patched EXE still runs consistently on modern Windows without affecting unrelated game behavior. I can inspect the binary, trace the relevant substitution-rule logic, identify the correct offset or patch point, test the modified behavior, and deliver either a patched EXE or an external patcher with clear notes explaining what was changed. I have a couple of quick questions. • What is the current substitution rule, and what exact modern rule should replace it? • Does the game run normally on your current Windows version without compatibility mode? I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos.
$500 HKD in 7 days
2.0
2.0

As a highly skilled and adept game developer with an unparalleled passion for problem-solving, I am confident that I am the perfect fit for your project. For over 9 years, I have excelled in the complexities of web and mobile development, specializing in software like your offline Windows football manager game. My expertise extends from reviewing and modifying source codes to redesigning game logics, just as your project necessitates. What sets us apart from others is our complete understanding and mastery of not only the code behind the game but also the immersive complexities of gameplay itself. My mission would be refreshing your game's rules while ensuring it retains its integrity and familiarity, so it skillfully balances modern expectations without alienating its devoted fan base. With me, selecting a seasoned developer means choosing from my array of skills – Game Design, Game Development and Software Development – that have not just allowed me to debug issues but also muster dexterous solutions even in the absence of source codes. As you delegate this task to me, an executable file will be returned quickly, equipped with a freshly modified rule deeply-rooted in nuanced appreciation of your game alongside brief notes on modifications implemented. This is what makes me - Neha and my company - best suited to modernize the trove of joy tied to this beloved classic PC game.
$1,120 HKD in 7 days
2.1
2.1

Hi, I have experience with Windows binary analysis, reverse engineering, executable patching, and legacy game compatibility. I can inspect the EXE, trace the substitution-rule logic, identify the relevant offset/condition, and provide either a patched EXE or external patcher while keeping the rest of the game unchanged. Deliverables will include the patched file/patcher, tested behavior on modern Windows, and brief technical notes explaining the offset and modification. Available to start immediately.
$1,120 HKD in 7 days
0.6
0.6

Hi, there I can help you modify the legacy substitution rule in your football manager game by reverse-engineering the Windows executable and isolating the specific gameplay logic responsible for that mechanic, while keeping the rest of the game completely untouched. I’ll start by analyzing the EXE in a debugger/disassembler (such as x64dbg or Ghidra) to locate the substitution rule flow, identify the relevant comparison or decision point, and trace how the game handles player changes during match simulation. Once the logic is clearly mapped, I’ll apply a precise binary patch (or lightweight wrapper/hook if needed) to update only that rule without affecting stability, graphics, or other gameplay systems. The solution will be compatible with modern Windows environments and designed to be minimal-risk, meaning the game will continue running exactly as before except for the updated substitution behavior. I’ll deliver either a patched executable or a standalone patcher depending on what proves safest, along with brief technical notes explaining what was changed and how the modification was implemented. I can begin immediately. Thanks.
$1,500 HKD in 2 days
0.4
0.4

Hi, I work on Python systems, low-level debugging, and production ML services where binary behavior and runtime constraints matter. The real challenge here is isolating the exact gameplay rule inside a compiled binary with no symbols, then changing it without breaking adjacent logic. Small offsets can have unintended side effects. Compatibility across modern Windows runtimes and ensuring deterministic behavior after patching is also non-trivial. Do you know if the executable has been previously modified or documented by the community? Are there saved games or scenarios we can use to consistently reproduce the rule behavior? Any constraints on how the patch should be applied at runtime versus a static change? I can review this carefully and proceed.
$1,225 HKD in 7 days
0.0
0.0

What’s slowing this down is usually tackling the reverse engineering aspect. Updating a core rule in an old game can be tricky, especially without the original source code. I can jump in to inspect the executable, find the logic responsible for the player substitution rule, and make the necessary adjustments. I have solid experience in game development and reverse engineering, which will help me efficiently patch the EXE or create an external patcher while ensuring that the game runs smoothly on modern Windows systems. I’ll provide you with brief notes that outline the changes made and how I achieved them. One quick thought: If there's a specific substitution rule you're aiming to implement, let’s clarify that upfront to ensure it aligns perfectly with your vision. The initial deliverable will take around 14 days. Quick question: what's the one thing that needs to work perfectly on day one?
$850 HKD in 15 days
0.0
0.0

I understand you need to modernize a specific player substitution rule in a legacy PC football manager game, working solely from the executable. My experience with reverse-engineering and patching executables for older Windows applications, particularly those with embedded logic like game rules, directly aligns with your project's core challenge. I've successfully identified and modified gameplay mechanics in similar vintage titles by dissecting their binary structure. My technical approach will involve static and dynamic analysis of the provided EXE. I'll use tools like IDA Pro or Ghidra for disassembly and code analysis to pinpoint the exact memory addresses and functions governing the substitution rule. Once identified, I will leverage a debugger (e.g., x64dbg) to observe the rule's execution in real-time and confirm the logic. The modification will then be implemented via a binary patch, carefully ensuring that only the target rule is altered and the rest of the game's integrity is preserved. To ensure we're perfectly aligned, could you confirm if there are any known specific edge cases or scenarios related to the substitution rule that are particularly problematic with the current implementation? Also, are there any documentation or community discussions available that might offer clues about how this rule was originally intended or implemented? I'm confident we can achieve the desired modernization. Let's schedule a brief call to discuss the specifics.
$1,457 HKD in 21 days
0.0
0.0

Hi, I can do this. Here's exactly what I'll deliver: * I'll load your EXE into a disassembler (Ghidra/IDA), locate the substitution logic, and identify the precise byte offset controlling that rule. * I'll patch that offset to reflect the modern substitution standard (3 to 5 subs, or whichever change applies). * You'll get a patched EXE that runs on current Windows, plus a short document with the offset address, the original bytes, and the new bytes - so you understand every change made. No source code needed. I work directly on binaries. Everything outside the substitution rule stays untouched. I've done this kind of legacy game patching before. It's a clean, contained job. Happy to start as soon as you share the file. What's your timeline? Best, Ensarhan
$900 HKD in 5 days
0.0
0.0

Hello Mate! Greetings , Good evening! I’ve carefully checked your requirements and really interested in this job. I’m a skillful mechanical engineer by using 3D CAD Software. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in Solidworks, AutoCAD, C Programming, C# Programming, Game Development, Game Design, C++ Programming, Software Development, Software Testing, Reverse Engineering, Windows Desktop and Debugging and several 3D CAD Software. I have rich experienced in Industrial & Mechanical design. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. For more details Chat with us
$1,245 HKD in 1 day
0.0
0.0

You need the exe reverse-engineered, the substitution rule logic found and patched, and the binary repackaged to run cleanly on modern Windows — no source code, no shortcuts. I've done low-level debugging and binary inspection work before — reading disassembly, tracing execution flow, and identifying the relevant offset. For a 20-year-old Windows game exe the substitution rule logic is likely a small conditional block, findable via static analysis in Ghidra or x64dbg, patchable with a hex edit or external patcher. I can't guarantee the offset location without seeing the file first — that depends on how the binary is structured. But if the logic is there and readable, I'll find it. Can you share the exe so I can assess the disassembly complexity before confirming timeline and price?
$1,120 HKD in 7 days
0.0
0.0

Sounds like you need that substitution rule patched directly in the binary. No source code is fine because the logic can be traced through static analysis. First step is loading the EXE in a disassembler to find the substitution routine. Once located, I identify the exact offset holding the outdated rule. Then I patch the bytes or build a small external loader if needed. Quick and clean. You get the patched EXE plus notes showing the offset and the change made.
$1,120 HKD in 7 days
0.0
0.0

Hello! I've worked on a similar project where I successfully reverse-engineered an old game to update its logic while preserving the overall functionality. This resulted in improved player engagement and modernized gameplay, which I can demonstrate if you're interested. For your football manager game, I’d start by analyzing the executable to locate the player substitution rule and then apply the necessary modifications. This will ensure it aligns with modern expectations while keeping everything else intact. Could you clarify what specific changes you envision for the substitution rule? Understanding your expectations will help me tailor the solution effectively. If you’re open, I can share my experience with a similar build, and we can see if it fits your needs. Looking forward to your reply!
$1,120 HKD in 7 days
0.0
0.0

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