I Hate Running Backwards is a 2018 shoot 'em up game developed by Binx Interactive and published by Devolver Digital. One or two players traverse procedurally generated levels using several characters, including Sam "Serious" Stone, the protagonist of the Serious Sam series. The screen scrolls vertically as the player character runs backwards through a partially destructible environment and battles enemies approaching from the bottom of the screen. The player can use two weapons, a melee attack, and an "ultimate" ability that requires the prior defeat of several enemies. I Hate Running Backwards was born out of a mobile driving game presented to and reworked in cooperation with Croteam. As part of the Croteam Incubator programme, it was moved to the Serious Sam franchise and renamed Serious Sam: I Hate Running Backwards, later I Hate Running Backwards. A publishing deal with Devolver Digital was reached in 2017, and the game was released for Windows, PlayStation 4 and Xbox One in May 2018 as the first Croteam Incubator game. The release was followed by a Linux version in June 2018 and a Nintendo Switch port that October. I Hate Running Backwards was met with a mixed reception. The game's control interface and arsenal were well received, while the visual style and character unlock system raised conflicting opinions. The game's slow pace, repetitiveness, and inconsistencies in difficulty between runs were criticised, although some of these issues were resolved through later patches. Gameplay I Hate Running Backwards is a shoot 'em up game and a spin-off in the Serious Sam series. The screen continuously scrolls vertically, as the player character runs backwards towards the top of the screen. They traverse procedurally generated levels of five thematic environments, occasionally using vehicles. The player can freely move the character on the screen and shoot downwards with a fixed aim. The character wields two ranged weapons that are fired individually. Running out of ammunition for the primary weapon reverts it to a pistol with unlimited ammunition. Further weapons and special abilities can be obtained through collectables. Using a melee attack, the character can deflect enemies' projectiles and kill nearby enemies. This attack can be used again after a cooldown. A special attack, the "ultimate" ability, requires filling a meter by killing enemies. Enemies approach from the bottom of the screen. A boss appears at the end of each environment, of which the final one, Ugh-Zan, has two