Required files: tremulous, base/vms-1.1.0.pk3, base/data-1.1.0.pk3, maps
This is the standard client which comes in the game package. It is not recommended to use it though because it contains security vulnerabilities and lacks certain useful features.
Replaced files: tremulous
This client executable is based on Vanilla executable and includes several new features and security fixes.
New features:
Replaced files: tremulous
Required files: base/vm/ui.qvm, base/vm/cgame.qvm, base/vm/game.qvm (for playing on localhost)
This client is only for developers right now. It is incompatible with Vanilla QVM files so it cannot be used to play on Vanilla compatible servers.