For many use cases yes. It does not support images (part of the point of vector work) which is a problem for some kinds of games, such as ones with very detailed painted assets - you cannot so easily replicate that with vector only. I will welcome the challenge of making a game only with Rive assets. 
@selimanac Wait, it can import PSDs? 
So it is a full Spine replacement? I can’t seem to get the live version to do what’s in the video, is it older version?