What is in the game is playable. However, the game lacks error handling in most areas. Don't try to break it and it shouldn't break. The devs test it as they make it.
We're having trouble with the Git repository, and as such it is out of date. Git on Windows is not fun. If you absolutely need the source code, submit something somewhere either on here or on the PokeCommunity forum thread. We can (and probably will) be uploading zips of the source soon.
We need a battle system. We will need the source code for it. If it is a module or class, good. If it has a working GUI, you pretty much made most of the game. Either way, you will be in the credits. If you want a different name than your username, tell us.
See [FAQ]. If that doesn't answer your question, ask on the PokeCommunity thread or open a ticket here.