Really glad you enjoyed it! The idea of hints was something I considered, and probably should have used. I was more worried about giving the game away before people had failed once or twice to give them that sense of discovery, but I could have maybe had it that on the second time if you've brought more than one rock by hand a thought bubble comes up from the player's head. 'There has to be another way...', or something. Would at least tell the player that it's not their fault and that they have to find a way. Thanks again and thanks for playing!