IKEA issues cease and desist against indie developer
gamesindustry.biz
gamesindustry.biz
https://scp-wiki.wikidot.com/scp-3008
> SCP-3008-1 is a space resembling the inside of an IKEA furniture store, extending far beyond the limits of what could physically be contained within the dimensions of the retail unit.
I just learned that this game exists, and went on to back it immediately.
In any case it could possibly be defended as parody, but only if the fact that the developer didn't use the IKEA name doesn't end the lawsuit sooner - which however would make it a really obvious parody.
[1] 15 U.S.C. § 1125(c) https://www.law.cornell.edu/uscode/text/15/1125#c
If they didn't send a cease and desist then that could be used as evidence that they don't conduct business in this area and so they can't claim protection.
You have to use a trademark to keep it, and of of the ways to use it is to enforce it in cases like this that are relatively inexpensive.