Crazy Killer is a shooter game by Selin D, officially released on July 17, 2021. The game was developed in a short span of six days as part of the developer's effort to improve their skills in game development.

In Crazy Killer, players navigate a first-person perspective to eliminate zombie cubes that approach them, utilizing basic movement controls and shooting mechanics. The gameplay emphasizes quick reflexes and strategic positioning to fend off the relentless onslaught of enemies.

The storyline of Crazy Killer revolves around a chaotic scenario where players must defend themselves against an invasion of zombie cubes, which pose an imminent threat as they close in. The objective is to survive by shooting these enemies before they reach the player.

Crazy Killer stands out with its unique premise of zombie cubes, combining a simple yet engaging shooting experience with a focus on fast-paced action. The game's straightforward controls and frantic gameplay provide an accessible entry point for players looking for a casual yet thrilling shooter experience.