I have been playing Tomba 2 for a while and found such a unique game. Tomba 1 & 2 are both collection / action games. But 1 clearly focused on action. While 2 focused more on collection in the form of mini missions, there are over 140. How many you complete effects which one of the multiple endings you get. It is not like any of them are boring. I have found they are just plain fun and I can't wait to see what the next one is.
This one is a must play. Whether it is a legal copy or not. Give Tomba 2 a try.