Twisted Metal Online, basically, except a free Source Engine mod. This little jewel seems to have been forgotten by the public, so if you want a server... make your own.

The interface is equal parts clunky and overcomplicated, the ingame text is clearly machine-translated from another language (likely French), and the enemies are able to spot you without fail from a quarter-mile off... but under all that, it's a fascinating game with one hell of a setting and tons of ways to accomplish any given objective. I mean, seriously... Hacking isn't just a minigame, it's like a mini-RPG battle by itself.

If League of Legends were zoomed in all the way and the targets were -still- tiny.
Enjoy cooldowns upwards of a minute on basic abilities.
Emptying your MP bar with one volley of powers.
Moving to a target's position rather than attacking it nine times out of ten due to a mis-click on the itty-bitty opponent.
If you like LoL and feel like a badass, this game will make you a noob again. Bring all the skill you like, the game itself is working against you.