You are David Dumbowe - it's like David Bowie, but a transcendent 5-dementional creature from deep space. You experience the whole human history as one moment, you are existing everywhere and everywhen at the same time. You can interact with people who affected science, art, or history, and as the results of your actions will have major effect.
People in this game are the actual representations of what they are famous for, like Newton can really change gravity, and you can't pass near Karl Marx with money. Spend the precious time of the greatest minds so they help you in your stupid platforming adventure!
Game is unfinished, so do not be surprised that some quests and items do not work!