Brink

A man-made floating city called the Ark, made up of hundreds of separate floating islands, is on the brink of all-out civil war. Originally built as an experimental self-sufficient, 100% "green" habitat, the reported rapid rise of the Earth's oceans has forced the Ark to become a refuge for humanity. Crammed with the original Ark founders, their descendants, and tens of thousands of refugees, and after 25 years of social unrest, the inhabitants of the Ark have reached their breaking point. It's up to you to decide the future of the Ark and the human race.