
Closed
Posted
Paid on delivery
In Pokémon Stadium 2 the Mystery Gift feature is supposed to hand out every possible item, yet a coding quirk in the N64-era random-number routine leaves several rare prizes completely unreachable. I need a concise ROM hack that corrects the RNG logic so every item on the original reward table can actually drop, while still respecting the intended rarity curve—common items should stay common, rare ones should stay rare, just not impossible. Here’s what I’m looking for: • Locate the section of the game code (MIPS) that seeds or filters Mystery Gift results. • Patch or rewrite the function so the full item list is addressable and probability weights remain unchanged from Nintendo’s original design. • Deliver a verified IPS/PPF patch plus a short technical note describing the change, the address range touched, and how you confirmed that the once-missing rare items can now appear after a reasonable number of test pulls. I work with legitimate backups and will test on both Project64 and real hardware via EverDrive. If you already have experience disassembling N64 ROMs with tools like IDO, MIPS GCC, or N64Split, this should be a quick assignment.
Project ID: 40192918
16 proposals
Remote project
Active 17 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
16 freelancers are bidding on average $103 USD for this job

As an experienced Unity Game Developer with a proven track record in game design, development, and testing, I stand uniquely fit for your project to fix the Mystery Gift RNG Bug in Pokémon Stadium 2. With over 5 years of hands-on experience working with game code, I have become well-versed in its intricacies. I will make it my top priority to locate the section of the game code that is causing the bug and methodically patch or rewrite the relevant sections while staying true to Nintendo's original probability weights. Additionally, my skills extend beyond just game development. I'm also an AR/VR specialist adept at using advanced tools like IDO, MIPS GCC, or N64Split that would be relevant to this project. Besides that, my knowledge of AWS DevOps can help with ensuring streamlined and secure deployment upon patch completion. In sum, I offer you an extensive combination of technical expertise in game development alongside my distinctive ability to solve intricate coding problems. So let's partner up and transform your Pokémon Stadium 2 game into a version where every item on the reward list can actually be obtained—without diminishing their original rarity curve!
$140 USD in 7 days
6.4
6.4

hello sir i have good experience in mips assembly language and reverse engineering i can fix Nintendo games using Project64 when i complete your project i will send you patch that fix Mystery Gift then you can accept my bid ( accept my bid when i complete your project not before ) feel free to message me
$30 USD in 1 day
3.0
3.0

Hello,there Thank you for posting your project, "Fix Mystery Gift RNG Bug." I've read the description carefully and am confident that I can successfully complete this project. I have over 7 years of experience in Game Development, Reverse Engineering, Game Testing, Software Engineering, Debugging, Game Design, Software Development and Programming. I have done some projects as smiliar as this one. I can share my previous project experience if you'd like. I enjoy learning new technologies and taking on challenges, even those that seem impossible. I'm very interested in this project and am confident that I can deliver the best results possible without stress. I look forward to working with you. Thank you, Boris
$30 USD in 5 days
2.4
2.4

As a passionate game developer with nearly a decade of experience, I’ve gained deep knowledge and skill in the field of game design, development and software engineering. With hands-on expertise in N64 ROMs and tools such as IDO, MIPS GCC, and N64Split, I believe I can quickly deliver the precise fix you need for the Mystery Gift RNG bug in Pokémon Stadium 2. Not only will I locate the precise section of the game code responsible for filtering Mystery Gift results using MIPS but I will ensure a thorough patch or rewrite of the function that respects Nintendo's original probability weights to keep common items common, and rare ones rare without making them impossible to obtain. For your convenience, I’ll deliver a meticulously verified IPS/PPF patch alongside a technical note detailing every pertinent change made. In line with your testing approach, I'll employ legitimate backups alongside both Project64 and real hardware via EverDrive to confirm that once-missing rare items can indeed appear after a statistically reasonable number of test pulls. In choosing me for this critical task, not only do you get an excellent problem-solver but also an effective communicator who ensures all changes are well-documented for future reference.
$140 USD in 7 days
0.6
0.6

My name is "Usama Safdar" and I am a Ph.D degree holder which means I am highly-capable to tackle this project "Content Editor " with 100 percent accuracy. I am a professional writer with over 6 years of experience in writing; Essays, Research Summaries, Thesis, Dissertation, Lab Reports and Case Studies. I always provide High-Quality Solutions within the shortest possible time with all instructions followed against very reasonable prices. I can manage works even with shortest deadlines like; "2500 words work in just 6 Hours" with very reasonable time. As a pro academic writer I am also familiar with all the referencing styles; such as APA, Harvard, OSCOLA, IEE, MLA etc. I always provide plagiarism-free solutions and as a prove I also provide "FREE Turnitin reports". For Samples, please visit my profile https://www.freelancer.com/u/SolutionMart Please message me to start the discussion. Thank You
$30 USD in 1 day
0.0
0.0

Hi, I’m Zeeshan Shahid, a Stanford MBA with 6+ years of experience helping students achieve strong academic results. I specialize in delivering clear, well-researched, and well-structured academic work that meets strict university standards. I specialize in Essays, Research Papers, Case Studies, Dissertations, and Any Other Assignments. Every project I deliver is original, Plagiarism and AI Free, Properly Referenced, and Tailored to your Specific Requirements. I have strong expertise in academic referencing and formatting styles, including APA, Harvard, Chicago, MLA, Vancouver, IEEE, and OSCOLA, ensuring accuracy, consistency, and full compliance with university and journal guidelines. If you’re looking for dependable academic support that truly delivers results, message me to discuss it further. Thank You!
$30 USD in 1 day
0.0
0.0

Hi, I can do this. I have extensive experience in reverse engineering and ROM hacking, particularly with N64 titles. I will locate the section of the MIPS code responsible for seeding and filtering the Mystery Gift results in Pokémon Stadium 2. My approach will involve patching the function to ensure that all items on the original reward table are accessible while maintaining the intended rarity curve. I will deliver a verified IPS/PPF patch along with a technical note detailing the changes made, the address range affected, and the methodology used to confirm that the previously unreachable rare items can now appear after a reasonable number of test pulls. My familiarity with tools like IDO and MIPS GCC will ensure a smooth and efficient process. I look forward to enhancing your gaming experience. Ashnasajid
$140 USD in 3 days
0.0
0.0

My name is Rabia Faisal, I am working in the writing industry since 2011. During this time, I have served countless clients with a full amount of satisfaction by providing them with TOP Quality Solutions. I have command of all references APA, Harvard, IEEE, MLA & Chicago, etc. I will provide plagiarism-free work with 100 percent accurate grammar within your given deadline. Please message me to get Top Class Services. I am waiting; https://www.freelancer.com/u/TopWritingGuru
$30 USD in 1 day
0.0
0.0

Hi, I'm Aisha Mujahid, an academic expert with 12+ years of experience in research support, writing mentorship, and scholarly editing. I help students and professionals enhance their work for clarity, impact, and academic success. From refining essays to polishing manuscripts, I offer tailored guidance to elevate your writing and help you achieve academic goals. I specialize in Essays, Research Papers, Case Studies, Dissertations, and Any Other Assignments. Every project I deliver is original, Plagiarism and AI Free, Properly Referenced, and Tailored to your Specific Requirements. I have strong expertise in academic referencing and formatting styles, including APA, Harvard, Chicago, MLA, Vancouver, IEEE, and OSCOLA, ensuring accuracy, consistency, and full compliance with university and journal guidelines. If you’re looking for dependable academic support that truly delivers results, message me to discuss it further. Thank You!
$30 USD in 1 day
0.0
0.0

I am the perfect fit for your project. I have experience dissecting N64 ROMs using IDO, MIPS GCC, and N64Split. I will efficiently correct the RNG logic in Pokémon Stadium 2 to ensure all items are attainable while maintaining their original rarity distribution. Here's my approach: • Identify the code section that affects Mystery Gift outcomes. • Modify the function to enable access to the entire item list without altering probability weights. • Provide a validated IPS/PPF patch with a technical summary detailing the adjustment made. Let's enhance your gaming experience together. Looking forward to collaborating. Best Regards, Eli Tanenbaum
$200 USD in 14 days
0.0
0.0

Hi, I’m Naveed Ali, and I have hands-on experience with N64 ROM disassembly, MIPS debugging, and RNG fixes. I can: Locate the Mystery Gift RNG / filtering routine in the Pokémon Stadium 2 MIPS code Patch the logic so all items in the original reward table are reachable Preserve Nintendo’s intended probability weights (no rarity distortion) Produce a clean IPS/PPF patch Provide a short technical note (addresses touched, logic change, and test method) Verification: I’ll validate drops via scripted test pulls in emulation (Project64) and confirm behavior is hardware-safe for EverDrive. This is a tight, surgical fix, not a rebalance. I’m ready to start immediately.
$140 USD in 7 days
0.0
0.0

We’ve worked on similar projects and understand what it takes to deliver this efficiently and correctly. Your need to fix the Mystery Gift RNG logic to allow every item on the original reward table to drop, while maintaining the intended rarity curve, is clear and achievable. We specialize in MIPS assembly and N64 ROM hacking, with experience using IDO and N64Split. While I am new to freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Dylan Rheeder
$200 USD in 14 days
0.0
0.0

When legacy randomness locks content behind unreachable logic, the correct fix restores intent rather than rewriting behaviour, and at Ace360 this is how retro systems are handled. I have worked on comparable cartridge era bugs where I reverse engineer game code to expose blocked outcomes without flattening probability. I will locate the Mystery Gift routine through Reverse Engineering of the ROM, then use Debugging and Programming to correct the MIPS logic so the full reward table is reachable while preserving the original weight distribution. We will validate the change by instrumented test runs and Game Testing across emulation and hardware, confirming rare items appear within expected pull ranges. The final output is a clean IPS or PPF patch with a concise technical note covering addresses touched and verification method. This approach avoids balance drift, unintended side effects, and brittle hacks. The result respects Nintendo’s original design while fixing the unreachable rewards. A short conversation is usually enough to validate the execution approach before moving forward. Lance Full Stack Digital Director
$140 USD in 7 days
0.0
0.0

Hello, I'd love to dive in to fixing this bug for you. I haven't played much of the Pokémon Stadium series but can fondly remember spending way too much time on red and blue back in the day :) I've worked with MIPS before (it was the target instruction set in my first compilers course) and am comfortable with a wide variety of toolchains including cross-compilation and remote debugging; aspects that should serve us well with this project. I'd also like to offer you a discount if you're comfortable with me live streaming my work. I do software and game development live streams to engage with and teach folks about how stuff works and I think this project would be an excellent fit. I'm happy to chat more about what you would and wouldn't want shared as well as how that would affect timelines and budgets. Thanks!
$30 USD in 7 days
0.0
0.0

Tulsa, United States
Member since Jan 31, 2026
$30-250 USD
$30-250 USD
$8-15 USD / hour
$8-15 USD / hour
$15-25 USD / hour
₹1250000-2500000 INR
$8-15 USD / hour
$10-80 USD
$8-15 USD / hour
$8-15 AUD / hour
$25-50 USD / hour
$20 USD
₹12500-37500 INR
$10-30 USD
$10-30 USD
£20-250 GBP
$250-750 AUD
₹12500-37500 INR
$250-750 USD
$10-30 AUD