Very bad. Some questions are bugged (right answer not showing, awards both correct and incorrect etc.). The game sometimes repeats questions in the same round. The game as a whole can bug so you have to refresh. Also, it is ofcourse out of date now but I'm not deducting points for that as it will happen to games like this.
Can't make a easy walkthrough for this (as it is random) but I have an answer key available if anyone wants some medal help.