Simulate
A three.js engine for cities seen from above and offices seen from inside. Cities ship as pure-data packs, and the sun and moon are computed from your clock.
Two halves over one renderer. Tera is the map view — a city from above, anonymous and free to play at tera.lumbridgecorp.com. Spaces is the same engine from inside, where member characters and private offices are invite-only and platform godmode remains administrative. Current source and self-hosted Spaces packages are proprietary and use private distribution. The immutable public baseline at git.karti.ai/lumbridge-public/tera/src/tag/public-apache-2026-08-24 remains Apache-2.0, with procedural art output under CC0-1.0. The 2D Phaser runtime this section described was retired on 5 August 2026.