The Lord of the Rings Adventure Deck Game is a free print and play solitaire game.
Micro Space Empire is a print-and-play solo game.
Micro Space Empire is a short “express” type game for one player. It was an entry in the QPnP (Quick Print and Play) contest; it is designed to be portable and easily constructed (less than 20 cards to print, plus a player mat).
The player is the ruler of a single solar system. There are ten other systems available to conquer and each system has its resistance to conquest and can provide resources to your expanding Empire. Resources are used to enhance your military and research new technologies. However, creating a vast interstellar Empire is not without its challenges; events such as revolts and invasions can pose obstacles to your rule.
The object is to survive and accumulate as many victory points as possible before time runs out.
Thermopylae is a free print and play solo game.
Treasures, Traps and Mummies is a solo print and play card game. From the author’s description
TTAM is a deckbuilding-roguelite solo game where you have to face the dangers of the pyramid, defeat the mummies, defuse traps and solve secrets to reach the treasure! Your assistant will help you in your quest, and strange relics can either help you or make your life hell!
Viridian is a free print-and-play, roll and write game that has armies of animals defending their forest against invading humans. Technically, it’s a flip and write, where you flip cards for an outcome and then make decisions about what spaces to mark on your scorecard.
The game’s cover illustration has a grizzly with a turret gun strapped to its back. How can you go wrong.