My kids just love dominoes which we play a lot at family game night. Looking for more of a challenge and to keep the nights exciting for my husband and me, I came across Eternity Games at a recent trade show. This is dominoes to the extreme.

With 3 game boxes to chose from (Boyz & Girls, Zoki, and Hexa-Zoki), you'll find hundreds of thousands of solvable puzzles. And each game comes with at least a dozen formats to play. Most simply, the players (and you can play alone) will select a format layout and play their pieces off each other--completing the shapes or pictures on each piece by laying them next to each other.

Its thought-provoking and addicting. A bit of a challenge for a preschooler... actually, a bit of a challenge for anyone! Up for the challenge? Try the online version before you buy.