A fangame created by Florian Hufsky. It can be found here.
The game is a 4 player competition with several modes of play. Built around a Mario Brothers world, you play as a color coded Mario (or any of the skins you download) and try to win by accomplishing the goal before anybody else or have the highest points before the time ends.
- 1-Up: The game not only features the green 1-Up Mushrooms, but also pink 2-Ups, blue 3-Ups and yellow 5-Ups, each moving faster than the previous.
- Alien Geometries: The game world uses an unwrapped toroidal universe, like Asteroids. The environments have the same geometry as the surface of a donut; this means that if you walk off the left side of the screen, you'll reappear on the right side. Fall off the bottom of the screen, and you'll reappear at the top. To prevent infinitely looping freefalls, you'll reach terminal velocity and burn up in midair if you fall too long. If you don't like this sort of thing, you can add walls to the sides of the level, or add kill zones on the sides of the screen.
- Color-Coded Multiplayer: Player 1 is red, Player 2 is green, Player 3 is yellow, and Player 4 is blue.
- Color-Coded for Your Convenience: In addition, every weapon a player uses, be it fireballs, hammers, boomerangs, bombs, Podoboos or Bullet Bills, changes to correspond to their color.
- Death Is a Slap on the Wrist: In some modes, such as Yoshi's Eggs or Stomp, dying has no effect on a player's score or gameplay, and does little more than inconveniencing the player.
- Developer's Foresight:
- Kuribo's Shoe makes you immune to upward spikes. If you jump on a Spiny in Stomp mode while wearing one, it retreats into a Spiny shell, the same way stomping on a Buzzy Beetle or a Koopa would give you its shell.
- Enemies in Stomp mode can burn up from falling too far, just like players.
- The Goomba: Appears in Stomp Mode and is playable.
- Goomba Stomp: The primary way of defeating your opponents and in most modes it is a One-Hit KO.
- Invincibility Power-Up: The Starman grants invincibility to a player, and allows them to beat other players just by touching them.
- Kill It with Ice: With the Ice Wand, a player can freeze other players into an ice cube, and then break it just by touching it.
- Level Editor: Two come packaged with the game, one is to create normal levels, the other is to create Super Mario Bros. 3-style worlds.
- Massive Multiplayer Cross Over: Thanks to user-created skins, the roster includes almost every named character in the Mario-verse, several Wario and Donkey Kong characters, fanon characters such as Weegee, characters from pirated games, almost everyone that has been in a Super Smash Bros. game, characters from the games that those characters were originally from, quite a few Touhou Project characters, most of Sonic the Hedgehog's (popular) friends, and every Robot Master from the first three Mega Man games. Even 7 Grand Dad is a downloadable skin too!
- Mercy Invincibility: Characters "Shield" after respawning (or getting hit if they're not One Hit Point Wonders), which in most skins is indicated by a white outline around them.
- Mutually Exclusive Power Ups: "Weapon"-type power-ups (any power-up that grants a projectile or Video Game Flight) can't be combined with other weapons. The Tanooki and Bob-Omb suits, though, can be combined with other power-ups.
- Nostalgia Level: Some maps are either remakes of levels from other video games or based on levels from other games.
- One-Hit-Point Wonder: In most modes, a stomp or projectile is enough to kill a player, but there are exceptions: Classic, Frag Limit and Time Limit have an option to make players lose lives but not die on hit, effectively turning lives into hit points, while in Greed mode you survive as long as you're carrying any coins, and Health mode is just Classic with actual hit points.
- Poison Mushroom: The Trope Namer appears in this game. It can also show up as a "prize" in the bonus roulette, which prevents the infected player from collecting and using reserve items.
- Shout-Out: By default, the Boomerang moves like it does in Super Mario Bros. 3, but there's an alternate option to make it move like in The Legend of Zelda instead.
- Soundtrack Dissonance: Can be done intentionally when creating a map.
- The Spiny: In addition to appearing in Stomp Mode, they are also playable, albeit they are functionally the same as everyone else.
- Stuff Blowing Up: Bullet Bills explode if they collide. Bob-Omb Suits and Bombs are two of the power-ups.
- Vocal Dissonance: All characters that burn up from falling from too great a height scream in Mario's voice.