Throw Up is a mixture of an arcade game and a puzzle game. The objective is quite simple: shoot little squares to form rectangles or squares by filling shapes with the pieces they are missing. You control a ship with the left and right arrow keys to move left and right. You shoot little square blocks with the space bar and you can increase the speed of the game by holding the up key.
As you play, you will see shapes that are missing one or more blocks to form a complete square or rectangle. You get points when you make full rectangles or squares. If you fail to complete a piece and your ship gets past it, you will lose. The farther you make it, the more points you will get. There is a Hall of Fame, which should include scores from other players. Throw Up attempts to connect to a server when you launch it, so maybe it is downloading Hall of Fame data. The gameplay is very entertaining. I wouldn't have thought that shooting squares with a ship to form rectangles would be so fun and challenging.
The graphics are OK for an arcade shooter and there are also nice sound effects. Throw Up is currently free, so go ahead and give it a try.