DEV Community: Lev Miseri

I made a 'benchmark' where LLMs write code controlling units in a 1v1 RTS game.

Lev Miseri — Mon, 23 Mar 2026 08:44:19 +0000

Link to the results and additional details: https://yare.io/ai-arena

The game is fairly simple. 9 vs. 9 units battling each other on a basic map. The only actions the units can do are move() and pew(). All of the complexity emerges from having to reason about where to move, and whom to pew.

Testing method

Every LLM first creates their 'baseline' bot by playing 10 rounds against a human-coded bot of decent strength. A round consists of:

write code based on the game's documentation
play a game (models are allowed to add console.log() for whatever they think is important to track
get a review of the finished game (ASCII representation of the game state at key moments + the logs they themselves coded in.

Once their baseline bot is ready, they play a 10-games round-robin tournament with each other with the same iterative loop (improving their bot every game).

The results

Gemini 3.1 is by far the best at this specific benchmark/game. See the replays and additional details at https://yare.io/ai-arena

Yare.io · RTS JavaScript game

Lev Miseri — Tue, 22 Jun 2021 07:34:58 +0000

1v1 RTS game where you control your units by writing real JavaScript.

https://yare.io

Minimal notepad with minimal stack

Lev Miseri — Fri, 07 Aug 2020 08:15:55 +0000

I made Kvak.io—visiting the homepage generates a new note that can be instantly shared with anyone.

The whole thing is made with HTML/CSS, vanilla JS and Firebase. No authentication, no libraries. And that's not 'by design', but because I just don't know anything else.

Is this something you could find potentially useful? Or is such a product way too simplistic?