When Cards Against Humanity was first released to the world, it was made available under a Creative Commons license that meant that anyone could simply print our their own copy of the game. Or, as designer Dawson Whitfield did, turn it into an online browser-based web app so that anyone can play it against their friends using a computer, smartphone, or tablet.
Cards Against Originality, as it's cleverly called, is played exactly like the card game, except that you and your friends don't need a stack of cards. Instead, you can all just whip out your smartphones, laptops, or tablets while you're all in the same room—or at least within earshot. One player needs to set up a new game and then send its custom link to everyone else who wants to play, but there's no app that needs to be bought and installed, no iOS versus Android incompatibilities, and no reason to spend the rest of your day doing any actual work. [Cards Against Originality via Taxi]