If you are or were a fan of the Original Pacesetter Chill: Adventures into the Unknown RPG then you are gonna love Cryptworld. It truly is the spiritual sucessor of the original, one could even say it's the 3rd edition of the game. if you have access to any of the original modules or sourcebooks they are instantly usable with minor modifications (e.g. XP intead of IP point awards), etc.
[5 of 5 Stars!]