Wii homebrew dev Yossi has released a new homebrew game called iiii. The dev says that it's similar in a way to Tic-Tac-Toe:
The rules are simple. You take turns with another player to drop red or black pieces into the board. Pieces fall in from the top and slide down to stack up on top of each other. The goal is to get 4 of your pieces touching in a straight line (diagonals also count) before your opponent does.
It's a good thing's I'm writing about this homebrew game instead of actually talking about it because I have no idea how its name's pronounced. I think it's an "eeee" sound.
Anyway. Iiii is a multiplayer game for two people. By default, the game only supports one Wiimote. If you don't feel like sharing just the one Wiimote with whoever you rnd up playing with, you can set "control TWOWIIMOTES" in a settings.ini file that you can put in the same directory as the game.
Download: Iiii v1.0
Download: Iiii v1.0 (source)