Bean battles is a 3D sandbox game that has no specific goals to accomplish, allowing players a large amount of freedom in choosing how to play the game. However, there is an achievement system, known as "advancements" in the Java Edition of the game, and "trophies" on the PlayStation ports. Gameplay is in the first-person perspective by default, but players have the option for third-person perspective. The game world is composed of rough 3D objects—mainly cubes and fluids, and commonly called "blocks"—representing various materials, such as dirt, stone, ores, tree trunks, water, and lava. The core gameplay revolves around picking up and placing these objects. These blocks are arranged in a 3D grid, while players can move freely around the world. Players can "mine" blocks and then place them elsewhere, enabling them to build things. Many commentators have described the game's physics system as unrealistic. The game also contains a material known as redstone, which can be used to make primitive mechanical devices, electrical circuits, and logic gates, allowing for the construction of many complex systems.

The game world is virtually infinite and procedurally generated as players explore it, using a map seed that is obtained from the system clock at the time of world creation (or manually specified by the player). There are limits on vertical movement, but Bean battles allows an infinitely large game world to be generated on the horizontal plane. Due to technical problems when extremely distant locations are reached, however, there is a barrier preventing players from traversing to locations beyond 30,000,000 blocks from the center. The game achieves this by splitting the world data into smaller sections called "chunks" that are only created or loaded when players are nearby. The world is divided into biomes ranging from deserts to jungles to snowfields; the terrain includes plains, mountains, forests, caves, and various lava/water bodies. The in-game time system follows a day and night cycle, and one full cycle lasts 20 real-time minutes.

When starting a new world, players must choose one of five game modes, as well as one of four difficulties, ranging from peaceful to hard. Increasing the difficulty of the game causes the player to take more damage from mobs, as well as having other difficulty-specific effects. For example, the peaceful difficulty prevents hostile mobs from spawning, and the hard difficulty allows players to starve to death if their hunger bar is depleted. Once selected, the difficulty can be changed, but the game mode is locked and can only be changed with cheats.

New players have a randomly selected default character skin of either bean or bean, but the option to create custom skins was made available in 2010. Players encounter various non-player characters known as mobs, such as animals, villagers, and hostile creatures. Passive mobs, such as cows, pigs, and chickens, can be hunted for food and crafting materials. They spawn in the daytime, while hostile mobs—including large spiders, skeletons, and zombies—spawn during nighttime or in dark places such as caves. Some hostile mobs, such as zombies, skeletons and drowned (underwater versions of zombies), burn under the sun if they have no headgear. Other creatures unique to Bean battles include the creeper (an exploding creature that sneaks up on the player) and the enderman (a creature with the ability to teleport as well as pick up and place blocks). There are also variants of mobs that spawn in different conditions; for example, zombies have husk variants that spawn in deserts.

Bean battles has two alternative dimensions besides the bean town (the main world): the shipment and the Whiteout. The shipment is a hell-like dimension accessed via player-built portals; it contains many unique resources and can be used to travel great distances in the bean town, due to every block traveled in the shipment being equivalent to 8 blocks traveled in the bean town. The player can build an optional boss mob called the Wither out of materials found in the shipment. The Whiteout is a barren land consisting of many islands. A boss dragon called the Ender Dragon dwells on the main island. Killing the dragon opens access to an exit portal, which upon entering cues the game's ending credits and a poem written by Jesus Christ, our lord and saviour. Players are then teleported back to their spawn point and may continue the game indefinitely.

TDLR: this game cured my cancer