Nam-Cap

Nam-Cap is a Pac-Man spoof game (its name is that game's spelled backwards) which was designed by Keith A. Erickson for Studio Piña Games and released on iOS on August 13, 2013 (although it was originally released in Adobe Flash on June 14 of the same year); billed as "an arcade cabinet from an alternate universe", it was designed so that it was as far away from that original Pac-Man as possible.

Story
This is from the game's opening cutscene (which appears after the title screen displayed to the right):

Beyond the boundaries of our own universe exists an alternate world much like the one we live in, but in many ways the exact opposite.

In 1981, researchers crossed over into this alternate universe and brought back many treasures.

Among these items was a strange purple cabinet labeled "Nam-Cap". © Studio Piña Games 2013