Most of the games that are put on the Wii are casual meaning,a party game, a dancing game,or a movie based game.The Wii has been judged by it's slow frame rate on games compared to the Xbox 360 and PlayStation 3.The Wii is also known for it's many game periphals including the Mario Kart Wii,Wii Motion Plus and many other accessories.
WiiWare is the downlodable marketplace for video games.It is is known for such hit's as And Yet It Moves,and the Bit Trip series.Let's say if you play a game such as Call Of Duty:Black Ops on the Wii you cannot download DLC for any games.The WiiWare marketplace has been judged for that.
Miis are little copies of yourself used in many Wii games and Wii Channels. It all starts on the Mii Channel. You can create your own character and make a plaza. However you can fit up to 100. The rest you have to rather delete or send to the mii parade. You can use your mii to compete in games. Let's say if you play Mario and Sonic at the London 2012 Olympic Games, you can press the mii icon and chose your made to compete.