There's no goal to build toward, no sound effects to spice up the gameplay, and no reason to do anything at all. This looks like a very good base for a game, but it's just not fun just like this. This looks like a tech demo for something that could be done, but even the rooms sometimes bug out when placed. If this has pretty clean code, you can probably get something out of it by adding some graphics, sound effects, and an objective to get to, as well as some limitations.