Cloud is a game where you collect clouds and put them to use to accomplish tasks. You can build various shapes with the clouds or use them to "eat up" the darker clouds and produce rain.
You control a character who flies around the sky collecting and deploying clouds using your mouse. The controls are explained very well by the first level of the game, so you should be able to hop right in.
The graphics for the game look beautiful. The game is done in anime-style and the artwork is just wonderful to look at. It reinforces the "dreamy" setting that the game tries to achieve. As for the sound, it is also well done. The background music and sound effects are relaxing and fit the gameplay very well.
The gameplay itself is very original. It will be able to hold your attention for several minutes and you may see yourself coming back to it for repeat sessions.
All in all, Cloud is a very well-made game with a unique premise and is definitely worth the download.