I decided to use BGM. Which platforms can take it off my games?
Greetings and welcome.
Platforms are Windows, Mac, Linux, FreeBSD (all 32 and 64Bit, see http://www.blender.org/download/get-blender/) and a bit of Android.
depending on the engine, you can almost always export mesh data,
beyond that, you need the format of the texture that is most compatible
you need to understand the limits of the engine you plan on exporting to,
in short what style game? detail level,
you can have VERY high detail pre-baked,
but it takes time and skill,
What is your skill level for coding?