The best alternatives to Minecraft: Pocket Edition are Game Builder, Minecraft, and All-Star Code. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Minecraft: Pocket Edition?
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Make a 3D platformer in 10 minutes, or spend hours jamming on the next indie hit. Game Builder is designed for all skill levels, from players ready to build their first game to designers looking for a faster way to realize their ideas.
Voxel Place is a virtual world where anyone can build anything. No need to sign up. The entire game is under 250KB. I recommend using Chrome to test this. Firefox performance is terrible. I'm working on improving it. There's also no mobile support yet.
VOXELCANVAS is Web base voxel modeling tool. All FREE OPEN SHARE creation platform. You can create Voxel model on the web. Through VOXELCANVAS, you can have a collaborative experience like a sandbox.
Smack Studio is a sandbox fighting game with built-in character and stage creation tools. Animate pixel art characters using our 3D pixel art rotation technology, then battle with up to 8 players! Use our free tools to export sprites for your own projects.