Not sure there'll ever be more, but this game shows that limiting the scope to create something simple but that actually works can lead to a better game than all that bloat that never goes anywhere. Even just this demo feels more complete and finished than many other games ever manage after years ^^;
And it was pretty fun playing the trashy family in a trashy motel. Even if everything's fairly nonsensical, but hey. It's for a good cause (aka porn ^^).
Don't think I had any serious issues; some map-wall-clipping stuff but nothing I couldn't move out of. Of course, "some" more interaction and such could be good, but again, feature creep is often the enemy of getting anything done, so ...