Minecraft

Mojang's 2011 procedurally generated sandbox is technically the largest open world ever made, with worlds extending 60 million meters in each direction. The blocky aesthetic belies an infinitely creative survival and building experience, where players can craft entire cities or redstone-powered machines. Data shows over 200 million copies sold, making it the best-selling game on this list. Its modular world generation ensures no two playthroughs are identical, a feat no other entry matches.