The Game „Borderlands 2“ is based on a 1989 release called „The Borderlands“ which can be played here. The 16-bit game just needs a modern Browser and the fun will begin! The second version is also available. Just read what the publisher 2k Games has to say about it:
Available internationally on September 21st 2012, and in North America on September 18th 2012, Borderlands 2 is the sequel to the critically acclaimed four-player cooperative shooter-looter that combined intense first-person mayhem with role-playing gameplay. Borderlands 2 features all-new characters; skills; imaginative, diverse new environments with unique missions and enemies; and more exciting and fun weapons, equipment and loot than ever before. All of these features come together in a story that takes players to the world of Pandora to take down the notorious Handsome Jack and his corrupt Hyperion Corporation as a solo campaign or with up to four cooperative players.
More info about Borderlands 2 is available here.