Good question! First of all, you should play every day games on Zeebra.
When you see what game is the best for you, than play that game, Even there is some games that gives many TC, MRP ... but if it's not good for you for any reason, you'll not get many TC and MRP.
Be sure to play T-Time every hour, for it you should only have luck, it's very interesting also as Trivia.
Personally, they're are all good and I play every of it :) Try it, you never know ;)
