The Chaos & Carnage expansion adds variability to your Robo Rally games with three new double-sided game boards featuring new elements like teleporters, randomizers, and crushers!  Also includes 5 brand new Upgrade cards!

Features:

Teleporters: Get around obstacles quickly by ‘porting to the other side.
Randomizers: Need some help? Try your luck.
Crushers: Dangerous to robots, only in certain registers.
5 new upgrade cards (Stun, Mirror, Leaching, Indirect Fire, Controlled Chaos).

Contains:

3 Double-Sided Factory Game Boards (a new board on one side, a classic board on the other!)
5 Upgrade Cards

-description from publisher's website