First off, it may be processor intensive to spawn hundreds of rooms maybe, but for a few dozen, I think it would be hard to tax the CPU without going into an infinite loop! So any algorithm that comes to mind, go for it! Unless maybe that algorithm requires spawning a lot of objects, which can be an intensive task. Would you be able to show the Blueprints for what you have so far? Maybe we can modify them from there to make things work. Otherwise, I may have time this Sunday to look at this properly for fun 