Gateway Engine

Each planet has a Gateway Engine located in the center of the planet. Once activated, like the Gateway Chambers, it has an Odd Stone to allow for teleportation between the Gateways. It can be found by digging to the center of any planet. The gateway engine has many tall purple towers coming out of it, with two that connect directly to it's surface. The gateway engine will be locked and unable to be entered until at least one external gateway chamber on the surface has been activated.

Planets
Each Gateway Engine requires a specific resource to create a Geometric Triptych, which is required to activate the Engine. The Geometric Triptych is unique to each planet and can be created repeatedly.