Gateways is a 2D platform game set in the lab of an inventor called Ed following an outbreak of a number of his more "creative" experiments. Gateways takes place on a single sprawling map rammed with puzzles and challenges. Alongside the traditional platform elements such as jumping on enemies heads, spikes, and moving platforms are the gateway guns. The gateway guns allow you to place two gateways on the walls, floors, and ceilings of the lab so that when you pass through one you emerge out of the other. As power-ups are acquired, the map opens up containing more secrets. In addition to the gateway guns, Ed will also find a torch letting him light up the darker areas of the map and a mirror which can be used to deflect lasers.