The biggest and most immediate use of blockchain for the games is user owned and user traded assets for MMO/Collectible Games. For an example you can trade @steemmonsters cards like you would trade physical Pokemon cards. You 100% own your assets. Imagine playing an MMO for a while and having the ability to sell your in game items in an open market for real $$$
I make at least a good $0.25 everyday playing @steemmonsters for 20-30 minutes everyday. When I win a Legendary Card or Gold Card, the numbers get much higher.