Ricochet is a jumping game made by Valve to follow a pre-steam update to Half-Life. The official maps take place in space where players jump around on neon-lit platforms, chopping each others heads off with frisbees. There's a significant lack of custom maps for Ricochet, and the community is small.

Ricochet is availible for purchase on Steam - however owners of WON Half-Life get it for free when upgrading to Steam. It's also included in the Counter-Strike Anthology package.

Ricochet is not part of the Half-life universe.