Talk:Nightmare Mode/@comment-190.47.140.249-20141005205006/@comment-75.112.169.137-20150325192553

Nightmare mode missions change. Even if you fully unlock a planet, It doesn't mean there'll be a nightmare mission readily available. Look again tomorrow and there may be one available on Venus again.

And no, there isn't just 1 nightmare mission available at a time. There can be 1 planet with 2 nightmare missions at a time, or there can be several planets with 1 mission each. It vaires.