If you like your post-apocalyptic stories told with way more text than Fallout, then Doomsday on Demand may be the series for you.
This text adventure pits you against mutants in the aftermath of nuclear war. The first part is over 100,000 words long and offers choices akin to a Choose Your Own Adventure book.
Both Doomsday on Demand and Doomsday on Demand 2 (which continues the story) are available on Steam now. Both are currently discounted to $1.97 each and run on Windows, Mac and Linux.