I kind of wish that lawyers could settle these things more amicably than by opening with outright threats. The game is clearly taking SCP 3008 as its inspiration and that is a a quite satirical horror story take on IKEA stores. A part of me wishes that companies would be a bit more relaxed about obviously comedic or satirical uses of their identity. What would IKEA lose by approaching the developers in a more supportive manner initially? Say, by offering some more constructive suggestions to steer them away from the particular elements they take offense at.