Like many food-related businesses, Well Stacked Pizza provide food to replenish health in GTA Vice City and GTA San Andreas, but are not accessible in GTA Vice City Stories. The name is a term for a woman with large breasts: "well stacked". In GTA San Andreas, many of the pedestrian customers that spawn in the pizzeria are usually seen eating pizza; the player can also go behind the counter to where the kitchen is, where a Fire Extinguisher pickup may be found.
In both GTA Vice City and GTA San Andreas, the chain also owns delivery scooters, which could be used in GTA Vice City to deliver pizzas for rewards. Whilst there are no sub-missions associated with the delivery scooter, players may rarely spot a Well Stacked Pizza employee riding the scooter in any part of the game; this is the only way the player can obtain the vehicle, although in GTA San Andreas the scooters may occasionally be found in parking lots, as well.
While failing to appear in Grand Theft Auto IV (though easter eggs confirm there are stores in the GTA IV Era), remnants of intentions to include Well Stacked Pizza as one of several interactive restaurants are still present, mainly with the existence of fast food employees outside different pizza restaurants around the game world (such as Pizza This in Leftwood), wearing uniforms with Well Stacked Pizza logos and baseball caps with the logo omitted. In addition, a shuttered storefront at the Alderney Casino in Westdyke, Alderney bears the logo and name of Well Stacked Pizza. The chain is mentioned on the Pißwasser website as a business partner of the beer company. Also, if the player uses a trainer to access pedestrian dialogue, they can listen to the things a worker says when the player approches them, the black guy who works at Burger Shot and Cluckin' Bell will say the dialogue, this shows that it would have been present in GTA IV but was cut.
In GTA San Andreas, the player is given a choice of four different meals at Well Stacked Pizza restaurants. All of the food choices besides the salad are references to breasts: "Buster" is from the word "bust", a word for breasts, "Double D-Luxe" is from DD, the bra size, and having a "Full Rack" is slang for a woman with large, well-shaped breasts.
GTA Vice City and GTA Vice City Stories
GTA San Andreas
In GTA San Andreas, San Andreas has an total of 13 restaurants (10 being operational and accessible).
There is one store in Los Santos, located in Idlewood; three in Red County, located in Palomino Creek, Montgomery (unmarked on the map) and Blueberry; as well as two in San Fierro, located in Financial and Esplanade North. There are four operational outlets located in Las Venturas: Roca Escalante, Redsands East/The Emerald Isle, Pilgrim/Starfish Casino and Creek; three closed outlets, both unmarked on the map, are found at the Old Venturas Strip (two in very close proximity with each other) and in Redsands West.
The young man who serves Carl at all the locations tends to be sarcastic about the food served there, uttering phrases like "nice and cheesy does it!" He doesn't appear, however, to be as negative towards the customer as his Cluckin' Bell counterpart.
San Andreas' countryside
- In The Well Stacked Pizza Co. branch in Little Haiti, there is a Haitian gang member that spawns in the kitchen facing the cooker as if he's helping out. Perhaps community service or an allotted job from the Vice City Police Department. This individual gangster is not hostile to you in any way even after the collapse of the Haitian's factory.
- In GTA San Andreas, if you enter Well Stacked Pizza Co., it is referred to as "Pizza Stack".
- The Well Stacked Pizza Co.'s telephone number in GTA San Andreas is (333) 374-962.
- The logo was resembling ball formations during playing bowling.
- You can eat a maximum of 11 meals. If you eat 12, Carl Johnson will vomit, and the person in the counter will say, "cleanup register". The player will then have to wait 11 hours (game time) before they can eat another meal.
- In the Pizza Stack restaurant in Montgomery, Red County in GTA San Andreas, if you jump against its front door instead of walking into the yellow marker, or if you aim a gun and walk towards it, the door will be pushed open and you will find yourself in a small room with black walls, which, other than in 2-player, is inaccessible to the player.
- Although there are no Well Stacked Pizza restaurants in Grand Theft Auto: Liberty City Stories, the Pizza Boy side mission is referred to as "Well Snacked Pizza".
- In any game of the GTA IV Era, if you go to The Lost Clubhouse go to the alley way, jump over the wall and look at the building, it should have The Well Stacked Pizza Co. logo on it.
- In GTA IV, two Well Stacked Pizza Co. employees can be found smoking in a large alley off Saratoga Ave, in Willis, Dukes, as well as behind Pizza This in Leftwood, Alderney.
- In GTA IV, if stuck in traffic, some pedestrians will say "I gotta get to Pizza Stack!"
- In GTA Vice City, driving by the Little Haiti branch with Pepe in the car (during the mission Trojan Voodoo), he will comment, "This place makes good pizzas!"
- In GTA IV, the Well Stacked Pizza logo appears on an exterior wall in the south-eastern corner of the Alderney Casino.