A small collection of four online games for the Dreamcast. Planet Ring was more like an online test platform than a real game for the Dreamcast. It was a giveaway from the Dreamcast Network to all who applied for it. Looks like it is rare now, even though I don't see how you could still play it. There is no offline mode. However, the games were well made and I had a lot of fun playing. Especially the "Battleship" variant made me play a few evenings. Unlike modern online games you did not have the option to talk to your opponents. All you could do is open a game or enter a battle.