slackbuilds/games/opensurge

Open Surge is a fun 2D retro platformer inspired by Sonic games and a
game creation system that lets you unleash your creativity!
Open Surge is two projects in one: a game and a game creation system
(game engine). It is released as free and open source software.

Open Surge is written from the ground up in C language, using the
Allegro game programming library.