A co-worker once challenged me and told me to come up with a game you could play with just one click / touch. So this morning I had an idea and decided to realize it. The game (if you dare call it so) took ~5 hours to write. It's the simplest concept I could come up with.
Two shapes change size on the screen at rapid speed. You must use your sharply trained eye to assess when they are equal (or roughly so) in size and quickly click on the game area. Your accuracy is measured. That's it.
Try it, fail at it, get better at it and tweet your best result.
Play SharpeyeI have an idea for another game mode where you try to guess when areas of two different shapes are roughly equal. For example a circle and a triangle. That could be challenging.