Quick bge question...

How can I keep a Rigid Body object floating?
Trying to make an asteroid style game in 2.5D

In the world buttons (Shaders tab in the Buttons Window/ World options), set the Gravity to 0.

Hope this helps!

That work great man, it never occurred to me … thanks I really appreciate it

You could also add an upward force of 9.8 to keep it floating. This way, if you wanted gravity, you could have it on for certain objects.