Thumbnail sketches

Alright so i switched over to come up with a game design/idea. These are the thumbnail sketches i made for them. 1 is where you are ice skating and once the lines from your skates connect then the ice falls out, another is where you have to shoot the blocks that you're flying at and blocks that you cant break will show up to try and stop you, another is basically a underwater version of Flappy Bird where you are a shark trying to capture a fish but the fish is always out of reach no matter how far you travel.

Front side:

Back side: