I've started making a new puzzle game that takes place in a 9x9-room building.
Now it's only in pre-alpha, but I already have made 17 rooms and a few games!

You can try it here: http://textadventures.co.uk/games/view/oustembdxuq-i_2whpsnlw/doors-pre-alpha-v0-2

Now it has 27 rooms, and new puzzles and hints were added!