We realize it can be a little confusing at first but trust us - BBO is worth it! The How-tos Bridge Base Online. Bridge Base Online (BBO) is a website, owned by Bridge Base Inc and launched on April 23, 2001, offering free online multiplayer bridge play, and has since become. Discussions about bidding systems, play of the hand, Laws, rulings and appeals, and Bridge Base Online issues and tournaments. You can compete anonymously against robots or log in and play against other people. Play contract bridge on Bridge Base Online (BBO), the world's largest bridge site. Play contract bridge on Bridge Base Online (BBO), the world s largest bridge site.