I'm going through the exact same thing since I writing a novel and even though I'm almost done, life, mood, and this 'blaming yourself for non being productive while doing nothing' circle is real. Thing is when I'm out, this is the only thing I think of, I'm like 'damn, I want to write, right now' but when I'm home, I'm more often on 9gag or playing a game than writing. Just for you to know that you're not alone in this, and sometimes, those creativity emptiness can be somehow productive, because the moment you create again, you do it with a fresh eye and a big rage.
good luck man, keep it up
your game will be great.
-F