XPilot is a multiplayer video game. It is open source and runs on many platforms. Although its 2D graphics have improved over time, they still resemble the style of Thrust. Gameplay includes Capture the Flag, base defense, racing and deathmatches. XPilot uses a client–server architecture, in which a central metaserver receives information from all XPilot servers on the Internet.

An open-source video game, or simply an open-source game, is a video game whose source code is open-source. They are often freely distributable and sometimes cross-platform compatible.