Spacetime Gate

are objects in. ST: can use them to warp from one location on the ST: to another.

Location and Uses
NaN Spacetime Gates are stone arches encircling parts of the ST:. They function in pairs. One gate of each pair has a green ST:-like triangle mounted on it. Blasting the triangle with the Cannon activates both gates in the pair. The first time ST: does so, ST: reads out faded instructions that appear on the ST:. The instructions say to blow the ST:, which causes a portal to slowly open from the center of the gate out to its edge. ST: must blow the whistle until the portal becomes wide enough for the ST: to warp through it, out to the sister gate on the other side. Once the gate pair is activated they can be used in either direction. They're almost always located in different NaN Realms.

In total there are 8 ST: pairs, labeled A through H. For 6 of them, the triangle gates are located on optional sections of the ST: restored by collecting NaN Force Gems. As such, these gate pairs become usable only by collecting the corresponding ST:.

The ST: in his house at ST: explain how ST: are activated. In the notes ST: says he tried throwing rocks at Gate A but lacked the arm strength to hit the triangle.