Build a browser 4X strategy game with LLM coding help
The poster built the browser 4X game Hexwardia in two weeks using Grok and Gemini to write the combat engine, fog-of-war, map generation and heuristic AI.
Done withGemini
- What they did
- The poster says they built Hexwardia in two weeks as a fully in-browser 4X game, using Grok as the main builder and repository and Gemini as a second-pass logic auditor. They had the models write systems like combat, fog of war, map generation, and heuristic AI, then constrained fixes to diff-only surgical patches so the models changed only specific routines instead of rewriting whole files.
- How it went
- The game was live in alpha v0.04.x, loaded in under a second, and the poster said matches were aimed at 15–30 minutes. In comments, an outside player reported a complete gameplay loop, real challenge from the AI, and no bugs, while also criticizing city depth, unit-role clarity, and map/world believability.
- Worth knowing
- Their main practical tip was enforcing no-rewrite, edit-only patches, which they say cut token burn by more than 60%; they also mention paying for $30 SuperGrok and $20 Gemini plans.
Try it yourself with Gemini
Help me build a browser-based [game genre] game called [game name] in [HTML/JS or framework]. Start with [first system, e.g. map generation, combat engine, or fog of war], write it in small testable pieces, and run it so I can try it. Stop when I can open it in a browser and play a basic round, then list what to build next.
Want help getting this working? Join the Vibe Coding Academy ↗ Run by Alex Finn, who also runs this site.
Source: Reddit · Aug 31, 2026
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