What the hell am I supposed to do now?!?!?! (Finished with everything.)

I've finished all the endings of TP1 and TP2. I've done all the DLCs. I've reached the end of everything that's playable in the world of Talos Principle. I'm already having withdrawal...

What did you play after you ran out of TP things? I've played Obduction and Quern. Both were OK.

I'm starting to have the DTs (Delirium Talosmens) so I definitely need suggestions.