Manga about 3 school friends who have to play games to survive I am having a tough time trying to remember the name of this manga. It had three high school friends and they woke up in an alternate reality where people play games to survive. The games difficulty is determined by a something and can determine the difficulty by a deck of cards.

The first game was something like 2 of diamonds and they had to get fortune cookies and survive a bunch of flaming arrows (Which they did). One of the group guys is smart while the other of the group guys is really brave then they have a 3rd member who is worthless it seems.
Imawa no Kuni no Alice (English title: Alice in Borderland) is most likely what you are looking for. It is adapted into an OVA series, which has 3 episodes at the time of writing.


  Alice Ryouhei will leave high school soon, but he's trying to avoid thinking about his future. Late one night, when he's hanging out with his tough friend Karube and his silly, girl-crazy friend Chota, they see fireworks. After one blindingly bright explosion, they find themselves waking up in a different world. In this 'Borderland,' people are forced to either participate in potentially deadly games or simply die. Will Chota, Karube, and Ryouhei be able to survive this dangerous new world, and is there a way they can get back to their original lives?


Here is a page from chapter 2 showing their first game, in which whoever answers the small problem on the omikuji incorrectly will be shot as many flame arrows as the difference between the wrong and right answer. Normally, omikuji is a piece of paper with fortune written on it, but in this story, it contains a problem plus some hint to clear the game.