Zipper

The zipper is the second/third? powerup in the game, introduced in the Kistoon Ruins section of the campaign. It enables the player to teleport up to four tiles forward through everything except for unpowered lead blocks or walls four or more tiles thick.

## Item Behavior

If the player touches the zipper powerup, the standard powerup animation will be played. If GR-18 already has a powerup, it will be cleared in favor of the zipper. As soon as the powerup animation is finished, GR-18 will be able to use the zipper's ability.

If the zipper item has a receiving channel, it will only appear if it has an input. If it doesn't have an input, it will appear to not exist and cannot be collected by the player.

The zipper will have circles around it and will float in the air like placed enemy drops. It will only go out of this state if it touches the player.

GR-18 can grab the zipper item if it does not currently posses a zipper powerup. If grabbed, the zipper item will come back to GR-18 like most items and will give it the zipper powerup once it fully returns to it. If GR-18 already has the zipper powerup, its grapple will go through the item.

## Powerup Behavior

The zipper powerup grants nothing to GR-18 besides a use powerup ability and cosmetic change. When 'use powerup' is pressed, GR-18 will teleport four tiles forward unless it is obstructed by a lead block or a wall four or more tiles thick.

When GR-18 teleports, the game will pause for a moment and a lightning bolt will appear between his starting position and destination. GR-18's colors will become black and white and he will put his arms out on either side and close his eyes as he teleports. GR-18 will teleport four blocks forward, unless there is a lead block or wall four or more tiles thick in its way (in that case, it will teleport as far as possible). Once the teleportation is completed, GR-18 will keep **all of its previous momentum**.

After teleportation, GR-18 will be able to teleport again after a **1 second** cooldown, with the time it took to teleport not being factored into the cooldown. When the ability is ready, three white lines will appear above GR-18's head as an indication.

## Trivia

* At one point, this powerup was named "Quantum Electrodongle".
	+ Way before that, it was originally named "Blink".
* Alpha gameplay shown that the Zipper was capable of air-stalling and can be mashed multiple times to stay in the air. It's possible it got removed due to potentially making level design harder as designers must find ways to prevent GR-18 from using the air-stall to exploit unintended shortcuts.
* The Zipper is *not* powered by quantums, but by burritos. How this is possible is unknown.
* This has the least movement capabilities (only teleporting) compared to other power-ups. For reference:
	+ The Tiptow can wall jump and climb walls.
	+ The Waylay's punches can be used to speed up or for an air boost.
	+ The Ripcord allows you to jet up and fall slowly with the propeller out.
	+ The Rebound recoils GR-18 and the projectiles can be jumped on.
	+ The Shade, while it also has only one movement capability, can throw its Teleportation Rune around.
* The beta box art and the exclusive tee show GR-18 in the "Zip Zen" pose. The only time where it's not in the Zip Zen pose and is teleporting is the main box art.

## Lore

* Sometimes your delivery location just doesn't have a door. Or any access point at all. No worries - the Zipper enhancement for your delivery GR-18 will get through whatever obstacles are in the way.