Flowball is a Windows game developed by Branden Hammann. It falls under the Adventure subcategory and is a challenging platformer. The objective of the game is to get the ball to the finish platform for each of the 19 levels.

The game's difficulty increases with each level, and to complete the game and get added to the high-scores, you need to beat all the levels back to back in the same session. The game is designed with simple controls, but the challenges are complex. Players need to be precise with their movements and timing to progress through each level.

Overall, Flowball is an engaging and challenging game that will test your skills and patience. The game is perfect for players who love a challenge and enjoy the thrill of beating difficult levels.