Warp Point

Warp Points are teleporter gimmicks, that are seen in Sonic & Knuckles, where they are featured at Sky Sanctuary Zone. It is illustrated as big, glowing, purple marble orb with a small structure around it. In Sonic & Knuckles, it can be used to transport to the another one, that is located at the higher section of the zone. At the end of zone, Mecha Sonic destroys one of them, as making no escape for the player and challenges him to the fight. Knuckles's version of the Sky Sanctuary Zone has only one Warp Point at the linear arena where final battle against Mecha Sonic takes place.

These Warp Points make another appearance in console versions of Sonic Generations, where these gimmicks can be found at both classic and modern acts of Sky Sanctuary. They work exactly as they did in Sonic & Knuckles.

Trivia

 * Before Sky Sanctuary Zone, larger teleporters at Hidden Palace Zone have exact same function as Warp Points. Also if the player has Knuckles in locked-on version of Sonic the Hedgehog 3 the yellow and blue teleporter plates at Carnival Night Zone and IceCap Zone work the similar way.
 * Background pillars of Sky Sanctuary in Sonic Generations are seen to have similar, but larger and different colored marble orbs as a part of them.