1-6 to move through the hot bar, with the prices being shown below the selections. Buying a money upgrade costs 50 more each time you buy it. Click in the green zone to drop the selected weapon or use the selected ability. Kill the little red men as they try to take your flag, but don't let them do this by dropping weapons from above with your always-growing stash of money. Boulder, 5, Crushes enemies for big damage, touches then explodes. Bomb, 20, Makes large explosions of particles that destroy enemies. Heal, 200, Go back to full health. Money Upgrade, 50 per, Increases the money gained per second by one.