What a fantastic experience. The puzzles are way too hard for me, so thank you for including 'exploration' mode, I'd hate to have missed this :) Honestly gives me a fuzzy feeling of queer community...
One minor bug report: the puzzle "U-TURN" is the only place in the game I've found where you can blow a hole through a wall and leave the screen, but the screen doesn't scroll; you're just trapped off-screen.