I really enjoyed Tomb Raider Underworld, and completed the whole game. The last of the traditional Laras, there are no 'gruesome' deaths, the gunplay is straightforward and infrequent, allowing you to concentrate on the platforming and puzzle-solving. You can customise the difficulty, get in-game hints, saving you to open IE to look for help if you are stuck, and you can also complete the game without having to kill any cute furry animals, which is very important for my children. Stomping on zombies is not a problem for them, however. I recommend buying it; it's just a shame that the two dlc levels are still priced so high, if they were on sale too I'd buy them both.