Game can be great for a lot of reasons. Sometimes simple repetitive gameplay is zen and nice to relax to, sometimes you want to get a glimpse into a character's world, and sometimes immersing yourself in a unique game environment is a reward in it's own.

Personally I just love when people get weird with the stuff they make and just create things purely out of their own mind. Directors like David Lynch and Panos Cosmatos come to mind. It always just feels wholly unique in a way that nothing else does, and I wish more studios would give people like that real budgets to make more cool stuff we've never seen/played before.