A downloadable game

This is a highly stratified society in which knowledge dominates everything. People are classified under a strict hierarchy. Some are born superior, enjoying the privilege of a luxurious life; some are destined to be at the bottom, working day and night hopelessly just to survive. Here, the lives of the low rank mean nothing, and without knowledge, they have no choice but to work as hard labor. Knowledge, you see, is the only way to change one's fate.