What's a good app/game to start with?

I’m looking to start reskinning, and would like some suggestions for a good game or app to start with.
I don’t want anything too complex or expensive.


  1. FTL
  2. Don’t Starve
  3. Monument Valley
  4. Legend of Grimrock
  5. Threes!

2.Shadow Fight 2
3.Roll the Ball
4.Cut the Rope