Math Shooters

How to play

• Catch the answer: the problem is at the top. Fly your ship anywhere on the screen into the bubble with the right answer. A missed bubble floats back up and comes around again.
• Shoot the enemies: hold Space to fire (FIRE on a touch screen). Every enemy shoots back: crashers fire and then dive at you, saucers circle and shoot, and the tank guards world 6 of every sector. Bullets never pop answer bubbles.
• Upgrades: after each wave pick one of three. They are yours to keep: they come with you to every world, and getting hit only costs a heart. Your ship shows them off: nose guns, wing pods, a glowing core.
• Laser: it charges over time and faster with right answers. When your ship glows, press left Shift to burn a beam straight up for two seconds.
• Controls: arrow keys or WASD to fly, Space or left Ctrl to shoot, left Shift for the laser, B for a bomb, P to pause. On a computer the game goes full screen; Esc leaves it. On a touch screen drag anywhere to fly and hold FIRE.
• Two players: player 1 flies with WASD, shoots with F, lasers with left Shift and bombs with Q; player 2 flies with the arrows, shoots with . or right Ctrl, lasers with right Shift and bombs with /. Rescue a downed partner by flying into their bubble, take turns catching for Teamwork bonuses, and stay close so your beam pops enemy shots.
• The map: each sector is one kind of math and gets harder world by world. Clearing world 3 of a sector opens the next sector. Mixed opens last.