DOORS is a story-based first-person shooter game that takes the player on a journey through a seemingly endless void. The protagonist awakens without any memory and must persist through his delusions to uncover the truth about his fate and understand why he is there. The game is developed by Calvin Weibel and is available for Windows users under a full version license.

The game is set up in three main segments, and the player is equipped with a shotgun and a pistol to battle the various enemies and obstacles. Throughout the game, the player must strategically shoot through all enemies to progress to the next level. The game's graphics and sound effects are impressive, and the storyline is gripping, keeping the player engaged throughout the game. Overall, DOORS is an excellent game for action enthusiasts who enjoy a good storyline and challenging gameplay.