Best open-source game engines (2026)

Free, source-available engines worth building on: Godot for an editor-driven workflow, Bevy for Rust and ECS, libGDX and Cocos for 2D and mobile. Health signals matter in a space where engines get abandoned.

1. 1
   godotengine/godot

   Healthy signals · 110,711★ · scorecard 5.4
2. 2
   bevyengine/bevy

   Healthy signals · 46,100★ · scorecard 6.9
3. 3
   libgdx/libgdx

   not yet analysed — analyse now
4. 4
   cocos/cocos-engine

   Healthy signals · 9,574★
5. 5
   panda3d/panda3d

   not yet analysed — analyse now

Drawn from RepoPilot's analyzed corpus and ranked by popularity and health signals, refreshed from each repo's most-recent analysis. Informational only — not professional, security, or legal advice.