The Irate Gamer Game (found iOS game; 2013)
From The Lost Media Wiki
The Irate Gamer Game is a lost video game based on the web series "The Irate Gamer". The game is a 2D platformer where you control the IG in a quest to get his video game collection back from the Shadow Overlord.
The game was released on August 25, 2013. The game was poorly received, which led to the price dropping from $3.99 to $0.99 after a very short time, before being removed from the store entirely on November 17 of the same year.
With the game completely gone from the Apple store, the only evidence of his existence are two YouTube videos, one being a short gameplay video and the other being a review made by 8-Bit Eric.