While it appears that their Kickstarter Campaign was canceled, this is a pretty genius idea. I can't vouch for the games that are actually on the towels, but I can see companies like Hasbro jumping all over this concept. The games Gato currently has on their towels cleverly make the use of utilizing any item as your game piece (beer bottle caps, sea shells, rocks, etc). Just imagine the possibilities of putting games and/or activity boards on towels though. These undoubtedly would have to be geared towards adults though, kids don't go outside nor can you separate them from their electronics. I feel that once they nail a solid drinking game on a towel, this concept is going to really take off.
Check out Gato's Facebook page for updates on their Gaming Towels.