When I play a video game, it's the game I want to play at the time I want to play it and with the goal that I picked for that session.
If I have to review a video game then I have all these choices largely made for me. The goal is to review the game rather than go for whatever I might want out of the game.
The reality of our lives force us to do things which don't always align with what we really want to do. That's when I procrastinate.