Ikea is a Swedish furniture retailer famous for its vast and disorienting store layouts. SCP is fictional universe depicted exclusively as reports filed with a secret government agency whose job is to secure and contain supernatural objects, entities and places — think Torchwood meets the OSHA Hazardous Materials Specifications Committee and you're all set. One of my favorite SCP stories is SCP-3008, concerning the discovery of a nascent civilization formed by shoppers lost in an infinite Ikea.
A game set in the SCP universe based on SCP-3008 – an endless Ikea.
The good thing is: Food stores get restocked every now and then. You won't starve.
The bad thing is that the staff tries to kill you as soon as the lights go out.
Barricade yourself with furniture, battle the staff and survive as many days as you can.
You can already download a basic prototype. Lights out!