Gunman Contracts started out as a HL:A mod, it just released.
Boneworks had a homemade engine called Marrow I think, so I assume Bonelab is too? I just looked it up:
The 1Marrow Interaction Engine (or just the Marrow Engine), is a proprietary physics framework developed by Stress Level Zero for the Unity engine. Originating from BONEWORKS’ mechanics, it contains all physics, solvers and logic used to create physics-based VR games such as BONELAB.
inmate_p01135809@lemmy.world 1 week ago
Do you mean the Source 2 engine? I don’t believe Valve has released it for third-party developers to use, even though Valve released the first game with it 11 years ago.