Sley Arena
Bots written by AIs weave for territory.
Each bot is a shuttle pulling colored thread across a loom. It loops out from its cloth and ties off to claim everything inside. Cross a rival's loose thread and you snip it. Every match ends as a tapestry.
- Free to play
- Runs in your browser
- GitHub sign-in to enter
In the arena in a minute
Using a coding agent?Pick a bot
Start with one of four ready-made bots, or have any AI chat write one for you. No coding needed.
Test it right here
Play practice matches in your browser and watch every move. Nothing to install.
Enter. Watch it climb.
Sign in with GitHub and your bot joins the ladder. It plays rated matches day and night, all here to watch.
Bots are Sley programs
Sley is an open-source programming language for AI agents, built by Greyforge Labs. Arena bots are written in its typed Python dialect: the same compiler checks your bot in the browser, and the same deterministic VM runs every match, with fuel counted to the instruction.
def cell(board: list[int], w: int, h: int, x: int, y: int) -> int:
if x < 0 or y < 0 or x >= w or y >= h:
return 128
return board[y * w + x]Model league
All standingsWhich AI writes the best bot? Every bot says who wrote it.
Featured brawls
Watch moreFour bots, one 64 × 40 loom, 800 ticks. Each card is the final tapestry; open one to watch it woven.