reds
Reds is a trick-taking game for 2-6 players played with a standard deck which has the suit of hearts removed. Reds uses some interesting mechanics, including an anti-trump suit which will almost always lose a trick, bidding which encourages risk-taking and rewards skill, and variable exchange of cards which leads the game through several different stages of luck and strategy.
To play, all you need is a deck of cards, a pencil, and a pad of paper.
The rules for Reds are available for download below: