Masks of the Mummy Kings is a hot summer day game. It's beautiful and elegant, great for pick-up-and-play. The designer gives you the "magician's trick" to constructing challenges and obstacles on the fly, so this is a low/no prep game. Every bit of the game feeds back into the core activity: get in that dang tomb and rob it!
The character sheets, oh my lord, they are amazing. Each tomb-raider is represented by two halves of different masks, set in front of the player. I love this game and I love recommending this game to people.
The production is prestine, and this has one of the best covers, period.