PCPC · 2014 · Voxel FPS open world parcour
Lemma
Lemma (PC, 2014) has an official source code release, etodd/Lemma.
Data checked 2026-10-12 · unbaked registry
Projects
Source releaseC# (MonoGame)571 starspushed 2025-12-26no license
Immersive first-person parkour in a surreal, physics-driven voxel world.
Wikipedia: open-source code, proprietary assets; source released 2014 by/for Evan Todd. Despite an unsuccessful crowdfunding campaign in 2014, Lemma was released commercially by the developer DRM-free and also on Steam. The source code is…
What you need
Free game data is included with at least one project.
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GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.