supermariowar (Super Mario multiplayer game)

Super Mario War is a fan-made multiplayer Super Mario Bros. style
deathmatch game in which players try to beat one another in a variety
of gameplay modes. You can play on teams, design your own levels,
design your own worlds, and much more! The goal is to stomp as many
other Marios as possible to win the game. It's a tribute to Nintendo
and the game Mario War by Samuele Poletto.

Notes:

- The game executable is called "smw".
- Single player games against bots are supported.