Good Wii Games

Donkey Kong Country Returns
Platformer - Hardcore platformer. Must play.

Metroid Prime Trilogy
First Person Adventure - Ports of the Gamecube games with added motion controls and slightly lowered graphical effects. Some of the best games you can find.

Metroid Prime 3
First Person Adventure - Great game, but better if you have played the first two games.

Super Mario Galaxy
3D Platformer - Mario game in space. Very good.

Super Mario Galaxy 2
3D Platformer - Does everything the first game did, only better.

Super Smash Bros Brawl
Fighting Game - Great fun with friends, but wait for the Smash Bros on Wii U.

Wario Land - The Shake Dimension
Platformer - Great 2D platformer that is very challenging to 100%.

Muramasa - The Demon Blade
Action - Very fun action game with beautiful graphics and music. Can be repetative. Best played on Vita.

Little King's Story
Real-Time Strategy Life Simulation Role-Playing - Create your kingdom and conquer the lands. Like Pikmin only better. The PAL version doesn't support progressive mode.

Kirby - Return to Dreamland
Platformer - Classic Kirby game.

The Legend of Zelda - Skyward Sword
Action-Adventure - 3D Zelda game. Can be really annoying with its tutorials and popups when you pick up items. Motion controls don't work too well.

The Legend of Zelda - Twilight Princess
Action-Adventure - Not the best Zelda game, but still a Zelda game.

Okami
Action-Adventure - Like a great 3D Zelda game, but the motion controls can be annoying. Also on PS3 in HD.

Xenoblade Chronicles
RPG - Overly long RPG.

Sin & Punishment 2
Rail Shooter - One of the best action games on the Wii.

Metroid Other M
Action - Great action game with horrible story / voice acting.

Link's Crossbow Training
Action - Shooting range game. Quite fun if you compete with someone.

Fire Emblem - Radiant Dawn
SRPG - Second part of the Gamecube Fire Emblem. Not as good as the GBA and 3DS games.

Boom Blox
Action - Really fun destruction game with motion controls. Best played in multiplayer.

Boom Blox Bash Party
Action - Like the first game.

Mario Kart Wii
Racing - Mario Kart with bikes. Fun game, but the online mode is deactivated. Just get Mario Kart 8 instead.

Metal Slug Anthology
Action - All Metal Slug games.

New Super Mario Bros. Wii
Platformer - Mario Platformer with annoying music and low difficulty level.

Super Paper Mario
Action-Platformer-RPG - Decent Mario themed platformer with RPG elements.

Kirby's Epic Yarn
Platformer - Very easy, cutesy and you can't die. Well made, but not hardcore at all.