Fire the iZZi at the corresponding coloured block to munch them up. Hit the wrong colour and your iZZi will pop!
Advance through the levels by collecting bronze, silver and gold trophies.
Create and share levels with the level editor and if you get stuck check the walkthrough in the right click menu.
Use your mouse to aim the cannon. Click to shoot. The further your mouse is from the cannon the more powerful your shot is.