I ran across Blokus strategy board game from a games dealer at a homeschooling convention. It looked like a good game, so I bought it. And I am so glad I did! My kids love it, I love it, everyone who tries it loves it. I took it to my brother's birthday party to let people play, and hooked every adult in the room on it. Simple rules, but endless strategy and fun.
Buy it here on Amazon-- I paid $[...] more for it from the games dealer.