Acies is a very nice looking two player card game designed to simulate conflict between ancient armies. it looks like it would be a fun thing to play on off-nights when your regular miniatures games end early. All the parts you need are there to download and print out.
After the Disaster: Tirage is a solitaire deck builder where you manage a hospital after a catastrophic earthquake. Playing time is just five to fifteen minures.
Set in the world of Frank Herbert’s Dune, The Art of Kanly is a card game where players try to win through bluffing and deception.
Freedom of Information Act (FOIA) filings have uncovered a collectible card game used by the Central Intelligence Agency to train agents.
Litterateur is a free print-and-play card game. The designer writes:
Litterateur takes place over six rounds – five normal rounds and one special round. For the first five rounds, players draft letter-cards into their hands, taking cards that are useful to them and trying to deny cards to their opponents. After the drafting is finished, players simultaneously try to create the best word possible using both the cards in their hands and a small shared pool of common letters. Each letter has a different point value, and this determines the ranking of the players in each round.