Broforce is an excellent game, reminescent of oldschool bullet-hell shooters like Contra and Gunstar Heroes, but with a greater focus on various playstyles. Levels are typically 1-4 minutes long, but can be challenging and sometimes offer numerous routes for completion. There are about 12 hours of content for a single runthrough, but replay is encouraged through 30 different characters (at the time of writing) that can wildly change how you play a level- stealthily, speedrun, explosively, etc. Additionally, co-op is a blast to play, and there are several other modes like 2-player duels, challenge missions, and custom levels.