1987 - created first FPS - The Colony
1988 - first realtime movie set visualization - The Abyss
1988 - invented portals
1990 - Virtus Walkthrough - first realtime 3D design application
1994 - co-founded Red Storm Entertainment, co-created Rainbow Six
2000 - chief architect of Open Croquet Project with Alan Kay, David P Reed, Andreas Raab
2010 - Senior Fellow Lockheed Martin, architect of DoD Virtual World Framework
2018 - founded Croquet Corporation