RimWorld moves from Unity to its own Waylith Engine

Ludeon Studios announced that RimWorld is leaving Unity for its own Waylith Engine in update 1.7, now in public testing. The developer reports 2.2x better performance in a late-game colony and modpack load times dropping from 14 to 6 minutes with 1500 mods. Saves and existing mods remain compatible, and a new game on the engine is teased.

• Update 1.7 with the Waylith Engine is live on the unstable Steam branch
• A late-game colony runs 2.2x faster on 1.7 than on 1.6
• Loading a 1500-mod pack dropped from 14 minutes to 6
• Saves and mods stay compatible, but very old PCs may struggle