Slapping together four games under a crazily dodgy banner in an effort to clear the back catalogue of crap does not make for good value for money. Buying three utterly dreadful games for the sake of one reasonably good one would be very silly indeed.
Death Or Glory is a sequel to Dragon Slayer though you can play them independently of one another. The tidily different animation alone makes the game worth buying, but it's a cracker on the whole as well.
Control your very own mummy, beat off hordes of evil black things, and get to face the ultimate challenge in the hall of the gods - where the objects and knowledge gained from your earlier exploits will be put to good use. The best Compass adventure to date, and that's really quite an achievement.