Pepsi Invaders

The game is a modification of Space Invaders, with nearly identical gameplay, but with a number of tweaks. Instead of having limited lives and no time limit as in the original, Pepsi Invaders has unlimited lives and a three-minute time limit to complete as many waves of enemies as possible. If any invaders successfully traverse the lowest row, instead of the formation dropping to the ground and ending the game, it merely moves left and right until all the lowest row invaders are destroyed. It is therefore impossible to lose the game.

Primary graphic changes affected the invaders, each row of which consists of the letters "P E P S I" followed by a single alien, instead of the original six aliens per row. The letters move up and down as they march but do not otherwise animate. The UFO was changed to look like a flattened Pepsi logo in brand colors. A timer was added, displayed on the ground, which itself has been changed to a Coca-Cola-like brown color.

Pepsi Invaders was commissioned by The Coca-Cola Company to be handed out to 125 executives at their 1983 sales convention along with an Atari 2600 console. It was developed by Atari, Inc. as a modification of the original Space Invaders cartridge. Due to the original Space Invaders Atari 2600 developer Rick Maurer leaving Atari over payment issues, Atari tasked designer Christopher Omarzu with hacking the original.

The game was delivered as a black cartridge with no label, in a plain white box with an "Atari goes better with Coke" sticker on the cover. The intent was to boost the morale of Coca-Cola's employees, but most of the cartridges were discarded by their recipients. Pepsi Invaders has been mistakenly labelled Coke Wins and Coke Invaders, to the confusion of Omarzu.

Writer Matthew S. Eastin notes it as an early example of an advergame–an advertisement game–and discussed how it was more an attack on a competitor than an advertisement by the company who had it made. The Guardian included it in its list of the best product placement video games, similarly noting it as an early example of this and a "mischievous" marketing attempt. PC Format called the game "a stroke of marketing genius worthy of The Apprentice". Retro Gamer was critical of Pepsi Invaders due to the letters not moving downward as the ships do in Space Invaders.

Copies of the game have sold for up to US$2,125 on eBay.