Easiest game you had beaten?

What was the easiest game you had beaten, why was it easy, or what made it easy for you to complete?
You can give a list if you'd like or just one game specifically C:

Any of the pokemon games. They are really easy and there is no real way to lose unless you corrupt your game

Super Paper Mario. I finished it on Wii in a week. My friend said it's so hard but UI bought it and finished it easy.

Pokemon games and any flash games.