Overview
Shit game, or shitty game is the English translation of kusoge, a Japanese term for video games seen as not good or poorly made. Kuso (クソ), while it can mean many English cuss words (e.g. fuck, damn, ect.), is often use for the swear word shit. The ge (ゲー) is a Japanese abbreviation for game.
For more details refer to the article Kusoge.