I don't know if this game has been mentioned here before, but it's already been out for a few months and a complete blast to play. It features up to 8 players -inspired by various movie character clichees- in a frantic sidescroller lead shower operetta.
There are several characters with their own special abilities who you can customise with different weapons, weapon skins and cosmetic items, both for money and points earned in the game.
Gamemodes range from classical deathmatch over one man army (sorta KotH) to team death match, with tons of custom rules to purchase with in game points, just like good old Worms.
At the end of every round there is a sudden death Showdown with some lovely atmospherical changes to the map (does not affect gameplay!).
Lastly, no other game will make you crack up and shriek with joy this frequently at your hilariously stupid deaths and glorious kills.
[video=youtube;nWuvLk1LJAM]http://www.youtube.com/watch?v=nWuvLk1LJAM[/video]
It also has the AWESOMEST METALIEST main theme of any game EVER.
[video=youtube;Bb-fThh2-5g]http://www.youtube.com/watch?v=Bb-fThh2-5g[/video]
Also a capella version.
[video=youtube;gvjzPkM2KJI]http://www.youtube.com/watch?v=gvjzPkM2KJI[/video]