Very nice game, honestly there's not much feedback I can give, except that for text-heavy games it's nice to not have typos & errors in the text.
But otherwise, I really liked the concept and the characters. I didn't really understand what the red guy was all about, and I lost 4 lives trying to guess his riddle (I assume it's some sort of direct translation from Russian), but all the other characters were very interesting.
Highly creative concept, nice visual gimmick, funny & interesting dialogues, short & sweet and without bugs. I dig it! Good job & great work!