Open Block Survival invites players into a unique simulation experience set among floating islands. As a player, you begin with minimal resources and must gather materials to expand your island, construct various structures, and create a safe haven. The game allows for creativity, encouraging players to build everything from farms to secret bases, transforming a small block into a sprawling kingdom in the clouds. The game's mechanics provide a blend of exploration and construction, essential for survival in this blocky universe.

In addition to building, players must navigate the challenges of survival during the night when dangerous creatures emerge. To defend against these threats, players can craft weapons, armor, and traps. The game features an upgrade system that allows for the automation of resource gathering and farming, enhancing gameplay. Open Block Survival offers a comprehensive experience for fans of simulation and survival genres, combining creativity with strategic defense.