Nice game, you can really get into it and be motivated to keep playing for a while. But after a while it gets excruciatingly slow. You can only hope to make any significant progress by making purhases. Then they keep making changes to the rooms, making them harder to explore. This impedes progress more because you need these rooms to get keys for the others. Also technical support is really bad - slow to respond, and they seem unable to fix your issues effectively.