Red Portal (Media Dimension):
The red portal is what keeps the video game characters/others alive, if one of the characters go in there, it'll lead to all sorts of other video games

White Portal (Unity Dimension):

The white portal is what holds mostly all unity games, if someone goes in there, it will lead to a random unity game (Baldi, Hollow Knight, etc.)

Green Portal (Meme Dimension):

The green portal is what holds as many memes as you could possibly imagine (except brainrot), if the characters go in there, it'll lead to every kind of meme you can think of

Pink Portal (Dating Sim Dimension):

The pink portal is what holds dating sims like DDLC, if some of the characters go in there, it'll lead to a random dating sim

??? Portal (Gaster Dimension):

This portal is mysterious and should not be talked about until further notice..

Purple Portal (Random Dimension):

The purple portal is very random, and if someone tries to go in it, they travel to a random dimension (just like the name!)

Yellow Portal (Cartoon Dimension):

The yellow portal leads to all sorts of different cartoons like Gumball, and if a character goes in it, they travel to a random cartoon

Blue Portal (Hedgehog Dimension):
The blue portal leads to Sonic video games, including Sonic Frontiers and other Sonic-related things, if a random character goes in it, they travel to a random Sonic game

More will be revealed later :)