Tanks

Controls

Goal is to get as many kills as possible (Suicide shots don't count)
Rounds end when one or fewer players are left
You get an extra point for surviving to the end of the round
Pick up powerups to get special shots / abilities
Powerups spawn randomly in pairs every 10s
Bullets are destroyed when they hit another bullet (with some exceptions)
All bullet-type powerups conflict, and shield + stealth conflict. Getting a new conflicting powerup will replace the old one.

Bomb - Explodes into shrapnel when hit or after a delay
Railgun - Hypersonic railgun pellet. Moves very fast, doesn't bounce
Laser - Fires instantly. Bounces and instantly kills everything it hits
Magnetic Mine - Arms itself after 1s, then gravitates towards nearest tank. Cannot be killed once armed
Rocket Artillery - Calls down rocket artillery onto the nearest player. Impact zones are marked
Shotgun - Short range burst of many small bullets
Shield - Player gets a force field that deflects all lasers and bullets for 6s. Tank cannot be killed
Stealth - Makes you invisible to other players and any targeting (ie rocket artillery + magnetic mine)
Teleswap - Swaps you with the nearest non-hidden player on fire (replaces gun turret)