1. Clearness of rules, mechanics.

• Many players can't figure out the rule right away. It feels confusing at the first glance.
• When the wind comes and clouds start moving, players get confused about whether their clouds are gone.
• Without a UI, it will be hard to know whether you have a powerup.

Solutions:

• Don't introduce powerup in the first 10-15 secs. Let players figure out how to play.
• Find a way to ensure players that moving clouds are not moved away!
• UI if must

2. Game Balance

3. Game options

• Choose game time
• Choose resolution
• Mute

4. Save the game and past scores

5. Quit game button