Show HN: Starcraft2 replay rendering engine and AI coach
tomkit Tuesday, March 03, 2026Starcraft2 is an old game, but it's always lacked a way to visualize game replays outside of the game itself.
I built a replay rendering engine from scratch using the replay files and Claude Code.
The replay files contain sampled position coordinates and commands that the player inputs. So I built an isometric view using the map and overlayed unit icons over the map, then interpolated the positions that units move in over time.
I also extracted additional metrics from the game data as well - some are derived on top of other metrics.
Finally, I pass all this context into a LLM for it to critique gameplay and offer strengths and improvements per player.
It's not perfect, but a good starting point to iterate and improve
Let me know what you think!