Craftmines is a free online game that is similar to Minecraft in its gameplay mechanics and overall style. In the game, players must explore a blocky, pixelated world filled with resources, creatures, and obstacles. Using these resources, players can craft tools, weapons, and other items, as well as build structures and mine for valuable minerals.

The game features a variety of creatures, including zombies, skeletons, and spiders, that players must fight or avoid. It also has a day and night cycle, where monsters are more active at night and players must be prepared to defend themselves.

Craftmines is controlled using the arrow keys on the player's keyboard, with different keys used for mining, building, and combat. The game features a tutorial mode for new players to learn the basics, as well as a survival mode for more experienced players looking for a challenge.