Fat Cat

Fat Cat is a Flash browser game released by Nitrome on 4 December 2008 in which the player controls two characters at once. The keyboard moves a purple flying cat that has three hit points and can fire a screen-clearing laser powered by food pickups, while the mouse steers an indestructible owl that shoots fireballs in any direction, blocks incoming projectiles, moves blocks and redirects lasers with mirrors. Its 21 levels, three of them boss fights, are built as puzzles as much as firefights: progress leans on memorising each layout and using the owl's defensive abilities rather than on weaving through bullet patterns.