A true lesson in what sort of state you should NOT release a game in, Afro Samurai 2: Revenge of Kuma received relentlessly negative reviews (including some calling it the “worst game of the year”).
How bad was this game? Well, it wasn't the notorious Atari E.T. experience, but it is notable in video game history for what may be a first. Realizing how badly they'd screwed up, the developers actually yanked the game from Steam and the PlayStation store.
They even went a step further then, offering refunds to absolutely everyone who made the mistake of buying the game. Obviously the next two planned segments of the series were entirely scrapped.
The whole situation was so bizarre that Afro Samurai 2's doomed existence made our list of the biggest gaming scandals of 2015.