Ah, I was using a keyboard on Windows 10 - is it that I needed a controller? That might be the issue.
That is definitely a possibility XD I'm actually coding keyboard controls right now, but it seems I won't be able to update the game page till after voting :/ Regardless, thanks for trying it out!
Ah, that's a pity - still, I'll be sure to come back when it's been fixed! And thanks for the help!