Love the title screen and main art in the game. I wasn't able to get a frog to land unfortunately. Maybe having a fake shadow to show where it would land and connect could help. Or maybe a dotted line guide ala Peggle/Angry Birds though that may be too hand-held. I also wonder if the controls would be improved by being mouse only. For instance, by moving the mouse left and right to move the cannon, then click and hold can be used to set the strength. Nice work!