There are currently lots of ways to have fun playing games for free Bitcoins.

Tremor Games

Get paid to play video games! You earn “Tremor coins” then exchange them in for Bitcoins! I have seen accountswith well over 400,000 Tremor coins! That would be worth .75 bTC or ~$448 for just playing games!

Get Paid to Play Minecraft

I personally have not tried this one out, but if you already play Minecraft I don’t see any reason why you wouldn’t add yourself to the list!