Halite II Replay Visualizer

What is Halite II?

Halite II is an artificial-intelligence programming challenge originally created by Two Sigma in 2017. You don't play it with a controller — you write a bot that plays for you. Each turn, every player's bot commands a fleet of spaceships: fly across the map, dock planets to mine halite and produce new ships, and fight enemy fleets for control. The last fleet standing — or the strongest when the turn limit hits — wins.

The original game and tools are open source in the HaliteChallenge/Halite-II repository.

A modern Halite II engine, rewritten in Zig

This visualizer is built for margual56/halite2, an updated, from-scratch implementation of the Halite II engine written in Zig — fast, dependency-free, and ready to run locally.

1. Download the engine from the releases page.
2. Write your bot starting from the starter-packs folder — available for Python, Go, Rust and Zig — or try the bot editor.
3. Run a match, e.g. halite2 "python3 MyBot.py" "python3 MyBot.py" — the engine writes a replay.hlt file.
4. Drop the replay here and watch your bots fight.