Best Discovery Alternatives & Competitors in 2025

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

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

Open Source

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Night is falling and your blockhead is freezing.

Blockland is a non-competitive multiplayer sandbox-style construction game. It's kind of like playing with legos on the internet.

BlocksWorld is an Exciting video game specially designed for Children.

SurvivalCraft is a mobile action and adventure game that is based on the wildly popular Minecraft platform.

Cubelands is an Exciting, Role-playing, Sandbox, Building, Single and Multiplayer video game created and published by Upjers.

Algodoo is a 2D simulator freeware product designed as a physics learning tool. It was originally created by Emil Emerfeldt as part of his master’s thesis in 2008. Read more about Algodoo.

Garry’s Mod is Funny, Sandbox, Co-op, Building, FPS, Action, Single and Multiplayer video game created by Facepunch and published by Valve.

Ace of Spades is a First-person Shooter, Sandbox, Crafting, Building, Co-op, Adventure and Multiplayer video game developed and published by Jagex Limited.

Lego Juniors Quest is an awesome, Fantasy, Action-Adventure, Building, and Single-player video game created and published by Lego System A/S.

Block N Load is a Free-to-play, Action-Adventure, Sandbox, Building, FPS, Team-based, Single and Multiplayer video game by Jagex.

CastleMiner is an Entertaining, Action, First-person Perspective, Sandbox, Building, Exploration, Single and Multiplayer video game developed and published DigitalDNA Games.