During this Jam participants build small games on RIVES (RISC-V Verifiable Entertainment System), a fantasy console that can run small games written in any language that compiles to RISC-V. RIVES can natively verify and store submitted gameplay files as rewatchable tapes and add players to leaderboards. RIVES lets anyone build custom leaderboards and more.
🔗 Links
RIVES currently includes direct support for C and Nelua. Any programming language can be used with RISC-V binding work. Other languages have also been used, see details in the Docs.
🎮 Optional themes
Roguelike
Infinite Wave
Opposite Day
Cyberpunk
📜 Jam Guidelines
- 🎮 Games must be single-player
- ⚠️ Mandatory: Game with metrics to establish a score/Speedrun, RIVES has a built-in demo/leaderboard system, making it interesting for such types of games
- ✔️ We'll have 5 days of voting on the best projects after the jam closes, with criteria: fun, replayability, unique, polished, graphics, sound, and controls
- 🧑⚖️ Rights: Whatever game created here is yours
🏆 Prizes
- 🥇 First: $500
- 🥈 Second: $350
- 🥉 Third: $150
⚙️ Game spec rules
| Display size | up to 256x256 pixels |
| Frame rate | up to 60Hz |
| Colors | up to 32 color palette, we recommend using the official color palette, but it can be changed |
| Audio | up to 32 simultaneous basic waveforms (8-bit chiptune style) |
| Input | 8 digital button gamepad (4 directional buttons, 4 action buttons) |
| CPU | RISC-V with a base clock of 128MHz |
| OS | RIV OS, a custom Linux distribution based on Alpine Linux |
| Processing limit | 96 billion RISC-V instructions, enough for 30 min sessions of DOOM |
| Memory limit | 96MB |
| Game Cartridge Size | 256KB |
❓FAQ
Can I work with a team?
YES!
Can I submit more than one game?
YES!
Can I port or adapt an existing game I have created before?
YES!
What language or tools can I use?
Absolutely anything.
Can I use a lower resolution or frame rate?
As long as the aspect ratio is 1:1.
Can I use a higher resolution?
NO!
What existing assets can I use?
It's encouraged to use original assets, but you’re welcome to use any assets you have legal rights to use.
Can I use more keyboard keys or more gamepad buttons?
NO, to allow people playing your game with gamepads and also easily on smartphones.
Can I use compressed sound files?
You can try, but fitting in just 256KB will be hard, it’s recommended to use just basic waveforms for sound and music.
Do I have to share the game source code?
No, but we recommend doing so we can learn more about how the community is using our game console, and also to bootstrap the community.