Not sure if there was a bug or it was my internet connection, I couldn't get pass the first door after putting three buttons in. I restarted the game and the same thing happened.
Nice and simple; I like when I've to resolve the game by single steps.
I don't like that the riddles will reset if I leave the screen (like the last one, I left the "riddle-screen" because I had to check the last colour, and when I came back I had to re-start again).
emotion puzzle's hard...since that depend on individual.
I already played this game on this site, so this is a duplicated entry. Also compared to last time, I could walk past the doors even if I didn't had the keys which defeats the purpose of the game. Played it on google chrome.