This new expansion to Sentinels of the Multiverse explores the heroes, villains, and environments of the Multiverse — those who travel through it, those who have been touched by its vast impossibilities, and those who would seek to destroy it!

Failure to Launch is a light-hearted, non-fiction tour of (so far!) unrealized technological and societal advances promised in years past, but which never came to be. What could have been, but wasn't.