PUNCH! is a simple 2 players boxing game by Alkis Moraitis, 5-10 mins per match. I added a short solo career mode. Components: 53 cards, 4 cubes. Mechanic: bluffing. Download everything: HERE (2.5MB). BGG link: HERE
LORD OF THE RINGS: ADVENTURE DECK GAME is a push-your-luck solo game by Michele Esmanech, 10 mins per adventure. This is one of my favorite pnp. I tweaked the game a bit to make the game tighter and bring more LotR stuffs, read in BGG here. Components: 58 cards (63x88mm) & 7 small cards (63x44mm). Download: rules, cards (56MB)