Lately I am preparing myself to develop yet another game in XNA C#.
The last time I worked on a game in XNA C#, I ran into this problem of having to add maps and custom
Would IronPython be more appropriate? That should work well on "full" framework - but it looks like it might not work (yet) on xbox 360 (which uses compact framework).
For an IronPython / xna example, see here.
You can try Jint which is a open source Javascript interpreter written in C#
The compact framework doesn't include System.Reflection.Emit, which means you can't use IronPython. I recommend LUA, and you can find an XNA interpreter implementation with open source here