Sometimes the simplest of things prove to be the most addictive. I came across The Eyeballing Game last night and I played it a lot longer than I expected. When I woke up this morning I was stoked to see if my skills were sharper in the morning (they’re not).
This is an extremely simple game that exercises your perception skills using simple geometry tests. There are 7 tests that you perform sequentially, and you do these 7 tests for 3 iterations (that’s 21 total tests, Aggro). Once completed you get a score based on a bell curve. It shows you where on the bell curve you scored, which is a nice touch for a math-skills related game.

