G FUEL!

### Collection Grid

**G FUEL!** is a promotional item appearing only during special daily runs or with an easter egg seed (GFVE LLLL) activated. It does not exist during normal gameplay.

## Effects

* A can of G FUEL! is available at the start of every floor. XL floors will give two cans.
* Some of G FUEL!'s effects depend on how many copies of the item Isaac has:
	+ Replaces Isaac's tears with various "guns".
		- The first can simply increases damage, tears, and shot speed without replacing tears.
		- The second can replaces Isaac's tears with bullets.
		- The third can changes the firing pattern into two accurate, rapid-fire streams of bullets. Changes Isaac's stats similarly to .
		- The fourth can changes the attack into a buckshot shotgun, shooting a large spread of pellets which bounce on impact with obstacles.
		- The fifth can changes the attack into a slug shotgun, shooting a single high damage projectile that bounces on impact with obstacles.
		- The sixth can changes the attack into a minigun, rapidly shooting bullets with low accuracy. This also pushes Isaac back depending on the firing speed.
		- The seventh can changes the attack into a rocket launcher, shooting explosive rockets that detonate on impact.
		- The eighth can onwards gives Isaac a random weapon from the ones listed above.
		- The ninth can onwards adds random tear effects to bullets.
	+ Starting with the second copy, speeds up the game every time it's picked up.
	+ Starting with the fourth copy, non-boss enemies have a chance to multiply, with further copies increasing the number of enemies.
	+ Each copy increases the amount of screen shake caused by gunfire and enemy explosions.
* Grants +0.2 Speed. Ignores the speed cap. Collecting other speed up items will also break the cap.
* All explosion sprites are replaced with stock explosion footage. Certain bosses have special explosion animations.
* All enemies explode on death. These explosions do not deal damage and do not destroy objects.
* All consumable spawn animations will be accompanied by explosion sprites as well.
* Enemies grant far more score on death than usual, and the amount is displayed when they die.
* All water and blood in rooms is replaced with a light blue liquid (presumably G Fuel).
* Pressing the "drop" button plays an airhorn sound effect.
* Most "special floor tiles" are replaced with special G Fuel floor tiles.
* Replaces Isaac's nightmares during floor transition with G Fuel-themed versions.

## Notes

* G FUEL! is not a "real" item for most purposes, and has no collection page entry.
* G FUEL!'s tear effects cannot be copied by familiars such as  or .

## Trivia

* The item is the first to count as actual product integration, promoting a *Binding of Isaac* themed energy drink by G FUEL. Other items in the game that resemble real-world products are allusions, jokes and the like.
	+ However, according to a tweet by Edmund, the item and associated daily run are NOT sponsored, and were simply added in as a joke.
	+ Edmund previously had a collab with G Fuel with his other game, Super Meat Boy.
* The various "guns" granted by G FUEL! work almost identically to certain weapons in *Nuclear Throne*, most notably with how the shotgun pellets and slugs bounce off of obstacles.
	+ The airhorn sound effect that plays when pressing the "drop" button may be a reference to a similar easter egg in *Nuclear Throne*, where pressing the B key as the character Y.V. triggers an airhorn sound effect.
* Internally, the item is generated on demand by enabling the effect, and inserted into the first glitch item slot which has the ID -1.
	+ If Isaac has , the G FUEL! in the starting room will not be glitched further.
	+ Spawning item -1 will not create G FUEL! if it's not enabled.
	+ Item -2 also gets assigned and will always be the same glitch item across separate runs.
* When collected, the item is listed as a "temporary"  in the Debug Console and can be removed as such.
	+ Normal Speed Ball is still available while G FUEL! is enabled.
	+ It is "temporary" in the same sense as  item wisps, but has no associated wisp that could be destroyed.
* The effect that the tears gain from the 2nd copy onward replaces the graphic for nail tears spawned by .
* The real-world-product G FUEL tubs feature cameos of modded characters among the horde of enemies:
	+ Isaac's Tears features Fiend from the Fiend Folio mod.
	+ Brimstone features Gomorrah from the Sodom And Gomorrah mod.
* , , , **G FUEL!** and  are the only **ALL CAPS** items in the game.