ogs-engine

There are 3 repositories under ogs-engine topic.

headcrab-junkyard/OGS
An open-source GoldSrc engine clone (Clean authentic reimplementation without using reverse-engineered code)
Language:C105 8 013
headcrab-junkyard/ApertureSrc
Further adventures of OGS Engine in Modernland (Alternative way of GoldSrc engine evolution)
Language:C9 3 02
headcrab-junkyard/ogs-sdk
GPL-licensed HLSDK (reimplemented using the original Quake engine and manually rewritten sources)
Language:C4 4 00