Malmö Jams Too presents the Card/Board Game Jam!
(malmojamstoo.com)

This game jam revolves around the creation of physical games. The theme for this jam was: Time Travel Frenemies.

What are physical games? We mean traditional games and games that involve materials like cards, boards, dice and tokens. We do allow digital games but they must remain screenless. So anything that involves screens that generate computer graphics will not count towards this jam unfortunately. Simple electronic dice and timers/counters will not either. Sorry! :)

Insightful posts about paper prototyping and good advice
http://www.malmojamstoo.com/paper-prototyping/
http://www.malmojamstoo.com/prototyping-advice/