Orange Fun is a hugely popular game that is similar to Tetris. Block shapes containing 4 blocks each are falling down the screen and you must direct them to fit in the wall on the bottom. When a line of blocks has no gaps it is complete and disappears.
Orange Fun features nice graphics and music which make it even more enjoyable to play. The maximum number of lines that can be completed simultaneously is 4, since at least one block is required per line.