ThatOtherDev has released a new Wii Homebrew game called Time Frack 3D, here is a quote from the source:
Remember that thing I posted a screenshot of back when I first showed off Hero City 2? I was going to submit both of them to the same competition but then only delivered on hero City 2? Well I started working on it again!
So here is the first playable build of Time Frack 3D for Wii!
You can walk, run, crouch, jump, grab onto ledges and most importantly you can slow down or even rewind time.