
A game about building emulators! Implement your own NEEES core in JavaScript, get instant feedback with unit/video tests, build the graphics unit in real time, learn 6502 assembly, debug test ROMs, and have fun with the included homebrew games!
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. Copies below reflect the player base, not paid sales.
Media

About
In the year 32767, the world suffered a massive cyber attack which destroyed the entire Internet. Since then, you and an online friend are trying to understand the sparse pieces of documentation about the NEEES, an ancient game console released in 1983. With your programming skills, you'll have to build an emulator that runs those old games, helping preserve video game history.
Full 🕹️ NEEES emulation guide from scratch, in JavaScript
Interactive 🔨 6502 Assembly tutorial
Implement 🧠 CPU, 🖥️ PPU, and 🔊 APU in any order
Play 👾 homebrew games to unlock ROMs
🧪 Unit tests, video tests, and audio tests are provided
💻 Unix-style shell and code editor
🎶 Original retro-synthwave soundtrack
📃 Included documentation and in-game dictionary
🗣️ Fully localized into English and Spanish
🐞 Powerful debugger with Memory Viewer, Disassembly, Name tables, CHR, Sprites, Palettes, APU Channels, Controllers, and Emulator Logging
🔭 Free mode to use the IDE to develop emulators for other systems!
This game requires programming knowledge. If you can't write code yet, turn back while you still can 😅
Genres
Stats
Languages: English, Spanish - Latin America
Engagement
Reviews
Themes across 42 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Great game for learning development, programming in assembly, and how computers interpret machine code. I've been really enjoying it. It is incredibly challenging and you will get frustrated playing it even if you have programming experience, but it's also very rewarding.
Ця гра не має бути безкоштовною...
很有趣 但建議有程式設計經驗再玩 一開始就要寫assembly 非常硬 結果好像有JS可以寫? 不過不管是assembly還是JS 都可以利用ChatGPT或Gemini來協助你通關
Related
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Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 42 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Está buenísimo, no entendí nada pero está buenísimo :)
The assembly explanation alone is worth more than words can say. I just acquired the Supporter Pack. Thank you very much!
Annoying dialogue plaguing what could've been a fun game.
WTF IM PROGRAMMING IN ASSEMBLY!!!!!!!!!!! JUST PLAYED MARIO!!!!!!!!!!!!!!!!!!
Great Game! I'm a comp sci student so this is really fun for me.
neat
제 기준으로는 상당히 갓겜이긴 한데 자바스크립트 ES6와 어셈블리 둘 중 하나라도 시도해보지 않았다면 비추합니다.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.