It's important to distinguish between "embedded" as in platform, and "embeddable" as in "integrate into existing application". MicroPython is used in embedded platforms, yes, but it's not an embeddable runtime like Lua. MicroPython is designed to replace the traditional C runtime with a Python one. The expected use case is to have a minimal C shim that initializes MicroPython, then define the rest of your business logic as a MicroPython script. There's no equivalent of lua_State that allows you to run multiple MicroPython interpreters concurrently in your program. There's no sandboxing functionality for running untrusted user scripts containing "while True: continue" or "oom = 'a'*(10**40)'. MicroPython doesn't solve the "I want rapid iteration with scripts in my game engine" problem, it solves the "I want to read the temperature sensor on my IoT board using Python" problem.