I've tried Lua, Python, and Squirrel. Lua worked out the best; it has a larger community and better support than Squirrel, and much better memory and performance characteristics than Python.

I've tried Lua, Python, Scheme, and Squirrel. Lua worked out the best; it has a larger community and better support than Squirrel, and much better memory and performance characteristics than Python. Scheme worked really well too, and has a really tiny interpreter, but it was hard for designers to wrap their heads around a functional language.