Taking the theme quite literally, I like it! Was stuck at 7 too until I read comments to find about the secret room. I think it would be cool to have an audio cue for the secret room (a small clicking sound coming from behind the wall or smthing could give greater sense of achievement instead of just randomly smacking at the walls like I did). Also, Lego house made my PC hang up for like a solid 8 seconds or so. Apart from that, game was fun!