Just Slide is a sliding-tile, logic-puzzle game similar to Maze Paint and Paint Sponges Puzzle. It features Classic and Limited Moves gameplay with 144 levels per option. The player's goal is to direct a paint sponge block with a smiley face through channels carved into white boards cut into different shapes. They must paint every part of the floor surfaces in the channels.
The player can't try the more challenging Limit Moves option until they complete at least 35 levels of the Classic one. In both modes, they slide the block in different directions in the channels. Paint transfers to the channels during the slide.
Just Slide doesn't penalize the player for making mistakes or sliding the paint block back over previously painted areas. Of course, when the player finally has access to the Limited Move mode, they must do everything possible to reduce the number of times they slide the sponge block.