Eliminate all the Roly-Polys in each level.
Use the mouse to aim. Move the mouse further away from the cannon to increase the power. Left click to fire.
If you're stuck there's a video walkthrough available here.
About Roly-Poly CannonRoly-Poly bugs have settled in the area! Use you cannon to get rid of this vermin.
Roly-Poly Cannon is an online action game developed by Johnny K, and has been played 8778496 times on Bubblebox.com.
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