Super Mario Bros. 2X2

A sequel to Super Mario Bros. 2 for the Nintendo Entertainment System released in 1991.

Plot
The night after Mario dreamed about Subcon, he dreamed again about the same world, meanwhile, in the dream world, Wart has returned with a bigger and more evil plan.

Normal

 * Shy Guy (walks around)
 * Snifit (shoots cannonballs)

Bosses

 * Pink Birdo (shoots only eggs)
 * Mouser (throws bombs)
 * Red Birdo (shoots eggs and fireballs)
 * Tryclyde (shoots lots of fireballs)
 * Blue Birdo (shoots iceballs)
 * Fryguy (is made of fire)
 * Green Birdo (shoots only fireballs)
 * Yellow Birdo (shoots only electricity)
 * Clawgrip (throws rocks)
 * Orange Birdo (shoots fireballs and electricity)
 * Wart (machine throws vegetables)

Bosses

 * 1-1 - Pink Birdo (on an endless platform)
 * 1-2 - Pink Birdo (on a platform above a bottomless pit)
 * 1-3 - Mouser (normal battle)
 * 2-1 - Pink Birdo (on a platform above some spikes)
 * 2-2 - Red Birdo (on an endless platform)
 * 2-3 - Tryclyde (normal battle)
 * 3-1 - Red Birdo (on a platform above a bottomless pit)
 * 3-2 - Red Birdo (on a platform above some spikes)
 * 3-3 - Mouser (battle with a Spark)
 * 4-1 - Blue Birdo (on an endless platform)
 * 4-2 - Blue Birdo (on a platform above a bottomless pit)
 * 4-3 - Fryguy (normal battle)
 * 5-1 - Green Birdo (on an endless platform)
 * 5-2 - Yellow Birdo (on an endless platform)
 * 5-3 - Clawgrip (normal battle)
 * 6-1 - Green Birdo (on a platform above a bottomless pit)
 * 6-2 - Green Birdo (on a platform above some spikes)
 * 6-3 - Tryclyde (battle with a Spark)
 * 7-1 - Yellow Birdo (on a platform above a bottomless pit)
 * 7-2 - Yellow Birdo (on a platform above some spikes)
 * 7-3 - Mouser (battle with two Sparks)
 * 8-1 - Orange Birdo (normal battle)
 * 8-2 - Orange Birdo (on a platform above a bottomless pit)
 * 8-3 - Wart (normal battle)

Re-releases

 * Super Mario All-Stars (via lock-on technology)
 * Super Mario Advance (via lock-on technology)