I've been following this game since it's beta, long before it got greenlit.
RRDDD (or just Disco Dodgeball) is an easy to learn, hard to master multiplayer game (or singleplayer, against bots) that I loved since the first time I've played it.
The game basically consist of silly robots playing deadly dodgeball in several arenas. Different game modes add a lot of variety. For instance: classic deathmatch, FFA modes, hoops (think dodgeball mixed with basketball), elimination, and more.
There are also different "skill shots", that depends on the way you kick an adversary's ♥♥♥, and rewards you with cool explosions, xp, an epic voice anouncing your shot, and the right to brag a little and feel great.
There's a lot of things I'm probably forgetting, but all in all, this game is insanely fun, highly playable for an early access, easy to learn, and the community is great.
Special mention to Erik, the Dev. Great guy and really invested in Disco Dodgeball. You'll probably find him kickin' some ♥♥♥ in the game from time to time!