Many projects allow you to run the game locally on your machine. No lag. No server queues. No griefers. Just you, the bots, and the hex grid.
Like any multiplayer game, Hexanaut has occasional desync issues or edge‑case exploits. The GitHub Issues page is a place to report: hexanaut github
The original Hexanaut game on hexanaut.io is a commercial product. The open-source code on GitHub is a clean-room recreation or an earlier version. If you plan to host a public instance or use assets commercially: Many projects allow you to run the game