I hope linking to an offsite game is acceptable? Particularly if it's a very funny one?
So I've never played Cards Against Humanity, but this image-matching game calls itself "Cards Against Humanity using pictures". It's not exactly an adult game, but some of the randomised pictures are a bit on the mature side. The purpose is to make the best match for the current image using a picture file from your 'hand'. Depending on the players' hands, some matches can be absolutely hilarious.
It takes at least three players to make the game work like it's supposed to, a lot like any group card game. The server has its busy times and its dead times.
Lately the default room, "bigapple", gets glitchy sometimes (usually it's the timer, ending your turn too fast), but an easy way around that is to alter your URL to move the game to a different room. Just type another fruit, for example, peach, banana, or cherry, where bigapple is in the address.
A game goes on until one player has won ten points, or stops if all but one player logs out.