OK, it's been 13 years. I think you should be able to just put the portals from Portal (2007) in your game without having to justify, explain it, or make it a "reference". If Superhot and TotK can have Braid-like time powers without batting an eyelid, then surely this is fine.
…crossposted from fairysvoice.net/microblog/…
it's been 16 years leon