When using the Rewind, the player will go back in time four-to-five seconds, making it very useful when trapped. When desired, simply press the action key/button of the slot the Rewind is in, and the player will rewind back in time. This can be very helpful in high rounds for getting away from Brutes and other strong enemies.
In Zombies in Spaceland, it can be purchased for 25 tickets inside if one of the reward stands located around the park. In Rave in the Redwoods, it can be obtained by first activating the Rewind Challenge at the challenge station located just outside Bear Cabin next to a waterfall (near where a Banshee wallbuy is). The Rewind Challenge requires the player to melee kill 15 zombies; once this is done, they can head back to the challenge station and retrieve the Rewind.