A excellent platform game with many features and well designed levels and graphics. Has a tutorial to get you started.

Cosgrove's Umbrella is a platform game with many levels and several worlds. Meese, the notoriously crazy weather demon thing, has (on a whim) risen a hurricane and sent Cosgrove, a Blob, away from his home to a remote corner of the world.

You control Cosgrove, and need to guide him out of this wonderland-- through the Meadow, Oasis, and Frostbite worlds-- without getting him eaten, burned, smashed, or a number of other undesirable things.

Your goal: Help Cosgrove return home and defeat Meese so he'll be able to live out of the weather.

Controls:

Arrows - Move
Space - Jump


Mike's note:

This one is worth a look!
No install needed