Those are simulations, not playable.
It is playable albeit your limited with your character to basically walking around your quarters and the docking bay and interacting with a few information panels, etc. but its still technically a playable game. Then there are all the other games in the link provided earlier which isn't even a complete list - missing atleast 2 titles from ~2004 even if they did need the PhysX PPU or a hacked PhysX library to make the feature work.