This article is a stub. Maybe you can help by .
Source 2 is a game engine developed by Valve as the successor to the original Source engine. The engine was announced in 2015, with the first game to use it, Dota 2, being ported from the original engine that same year. Since then, Valve's Artifact, Dota Underlords, the Aperture Robot Repair portion of The Lab, and Half-Life: Alyx have all been made with the engine.