are there any games like wii fit on 360?

[Zappykins]

Yes, there are three:

 * The Biggest Loser Ultimate Workout - the mystery meat navigation is terrible, but the workout is good.  I would recommend this for a beginner or someone healing from an injury.  I think it tracks you and tells you where to correct something very well.  It ASK you if you need to stop or get a drink of water.  It also has a mode where you can challenge others online. http://gamrreview.vgchartz.com/game/45630/the-biggest-loser-ultimate-workout/

* Your Shape: Fitness Evolved - better navigation and a harder workout than biggest loser, but lacks some of the personality of the former.  I don't find the feedback as helpful as the Biggest Loser.  It's martial arts aren't as good as the yoga for BLUW. There is some DLC that I haven't tried like Kick Boxing and a Bollywood Workout and will hopefully improve.  http://gamrreview.vgchartz.com/game/45626/your-shape-fitness-evolved/

* EA Sports Active 2 - I haven't used it yet so can't say.  I like the EA More Workouts well enough for the Wii, but the warm up/cool downs are repetitive and I've not had the tracking problems I had in the Wii version on any Kinect Game.  I hope they did it a little better on the abs/cool down/warm up sections in this one.  http://gamrreview.vgchartz.com/game/45635/ea-sports-active-2/

I have the first two, and the are definitely a better more varied and through workouts than Wii Fit Plus.  But they don't have the games/play that the Wii version does (Flying Chicken Suit, Snowball fight, etc.)  I think you might be happy with any of the three for what you are seeking, but unless you are rather fit, I would stay try the least expensive BLUW.

Happy Exergaming!

Zappykins