How did I cheat? =(
I finished the game and got the good ending. I had to refresh the page to play it again. I wanted to see a different ending.
Nah, I was just kidding! :D
We originally wanted to make it playable only once, but it might be the case that we screwed up somewhere ;) The final version will be playable as much as the player likes anyway, so everything's fine and I hope you enjoyed the other endings as well!