New daily reward - mini games

I've seen this on a lot of other games. You could have a little game to play once a day to receive a bonus.

IE there could be like a carnival like "Test of Strength" where you could earn 100 up to 500 ISO depending on how hard you can hit.

That's just 1 example but there's tons of different things you could do. You could even have where the game can be played once free daily but can do up to 3 more turns. 100,200,300 how costs each and then that's max for the 24 hour period. Figured with the marvel them you guys could think up something really cool.