Complex sentence: Dig Dug Island is an online multiplayer game for the PC by Namco Bandai in Japan, it is also a sequel to Dig Dug II as it takes place on top of islands and not underground.
Split into simpler sentences: Dig Dug Island is an online multiplayer game for the PC by Namco Bandai in Japan. It is a sequel to Dig Dug II as it takes place on top of islands and not underground.