Best CastleMinerZ Alternatives & Competitors in 2025

A block-building game that allows you to create and explore entire worlds from scratch.

Open Source

Play and build amazing games

FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun.

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3079: Block Action RPG is an Action-Adventure, RPG, Open-world, Voxel-based, Sandbox, First-person Shooter, single and Multiplayer video game developed and published by Phroot’s Software.

StarForge is an Action-Adventure, RPG, Voxel-based, Combat, Survival, First-person Shooter, Single and Multiplayer video game developed and published by Code Hatch.

I'm thinking of experimenting with making models for stonehearth. What are my options for the voxel model software? what would you recommend?

Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.

Physics Simulation Sandbox

Space Engineers is an Action-Adventure, Sandbox, Voxel-based, Space, Single and Multiplayer video game created and published by Keen Software House.

Reimagining the way people come together.

Haven and Hearth is an addictive, Massively Multiplayer Online, Role-playing, Sandbox, and Loosely-based video game inspired by Germanic myth and legend and Slavic.

8BitMMO is a Retro-Style 2D, Free to play Massively Multiplayer Online Role-playing video game developed and published by Archive Entertainment.

Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner...

Open Source

Wurm Online is the MMORPG where the players are in charge! Developed around the idea of player-influence it stands as one of the only, true Sandbox MMOs.