Vex is a fast-paced platformer game that challenges players to navigate through a series of increasingly difficult levels. The game features a stick-figure protagonist who can run, jump, and slide his way through obstacles, enemies, and hazards. Each level is filled with obstacles and traps, such as spikes, saws, and lava, that must be avoided or traversed in order to progress. The controls are simple, with players using the arrow keys to move and jump, but the levels require precision timing and skill to complete. Vex also includes a level editor, allowing players to create and share their own custom levels with the game's community. The game's minimalistic graphics and addictive gameplay have made it a favorite among platformer fans.