Grey: An Alien Dream plunges into an atmospheric future world, telling the story of a lazy alien botanist who falls asleep in a spaceship and finds himself embroiled in amazing adventures. A hero named Alex Peragin Gray sets off on a long journey, where he will have to fight monsters, aliens, robots and other enemies. Users will have to visit themed arcade levels that transport the protagonist each time to unique universes. The game is an action platformer with fighting game elements, where you control a character from a side view.

While playing Gray: An Alien Dream, players will have to visit various stylistic locations (fantasy, science fiction, horror, zombie apocalypse, etc.). Gameplay mechanics and graphic design are made in the form of beat'em up projects of the old school of the 80s. Players will have to move around the map, clear the area of ​​enemies and watch cut scenes between levels. Users will use combinations of kicks, punches, and jumps to overcome terrain obstacles and launch attacks in the air. The main task is to destroy enemy fighters that will interfere with the hero’s progress. The character will be directed from the left to the right corner of the screen, where at the end he has to meet the boss and win a difficult battle, separated by several rounds.