I am a fan of FIFA 09 for Wii, but I was deterred from buying 2010 because of bad reviews. But with the World Cup coming up, I decided to purchase the game to get to know the squads for the upcoming tournament. I am enjoying this game immensely.
First off, the gameplay- the addition of using B to do high passes brings the game's fun factor up by a mile, and was something missing from 09. The shots are explosive and remind me of a more arcade experience, but it's quite fun. The shooting is a bit like the Footii matches from 09, but faster shot speed. There is a bit of slow motion that comes when shooting, but it enables you a split second to position your defensive player to make a block and help protect your goalie. I don't find it obtrusive, but some might so please keep this in mind. So far, I am not sure if this feature can be disabled. Shooting on set pieces is more difficult, and is not as automatic as it was in 09- you no longer point the Wii remote at the screen, and requires some timing by shaking the remote at the correct moment. As a soccer fan, I like all of this.
Second, I really enjoy the Build Zakumi's Dream Team feature, which put you and your (default) low rated all-star squad up against various nations, with objectives to complete in game. This feature reminds me of older EA games, accomplishing things to gain points for better skills, etc. As you defeat clubs and accomplish (like maintaining 68% possession against South Africa, or completing 10 straight passes and scoring off those passes against Honduras) tasks, the game allows you to trade players with the team you defeat. This enables you to build an All-Star team of the best Internationals! Another neat feature I like is, as you build your Dream Team, you are able to download it to your Wii remote to play at a friend's house. Very cool, although I don't know how useful it would be unless playing many friends in some sort of tournament. Overall, seeing the new kits, having 199 teams, and the innovative features make a cool game.
Update 5/11/10: I am still enjoying the game, having completed the Dream Team feature and now trying to complete the unlockables. I noticed some commments are negative toward the Wii version compared to other consoles. I think this is the point of the Wii. If you are new to soccer or just want to have fun and score a lot of goals, this is a fine game and system.