Wii Flash games
MiiBoard - With MiiBoard.com you can meet new friends, track Wii Codes, Chat with other Users, Add Friends, Track your Game Collection, Browse Fullscreen Videos, Read News Feeds, Play Arcade Games, Generate Mii Gamer Tags and more!
WiiPlayable - Play Wii Flash Games online through your Nintendo Wii’s Opera web browser. Choose from our growing selection of Wii Playable flash games that are compatible with your Nintendo Wii’s motion-sensitive controllers (or wiimotes). To play the online games listed below, your wiimote will act as the mouse and the ‘A’ button on your wiimote will act as the mouse’s ‘left click’ button. You can also play now at your computer by simply using your mouse. Just click on the PLAY link for one of the wii flash games listed below.
WiiCade - rated Flash games playable on Wii.
FlashWarrior - tons of playable games.
Games at EikSoft - large fonts and clickable Flash titles. The site allows users to rate Wii games.
Albino Black Sheep Wii Games - excellent design and quite a few Flash games playable on Wii. The author also lists the game size, so you can estimate the download time.
WiiFlow - the only site to care whether you have a full screen (4:3) or widescreen (16:9) TV and optimize for your TV.
Wii Arcade - highly optimized for your Wii.
WiFii - only a few games for now, but more coming.
Orisinal flash games - easy to navigate interface, but the icons are kinda small for Wii.
Wii4 - not just games, but Wii news and apps.
Also, find out how to burn Wii games via either hardware mod chip of software solution.