Exploration Crafting

Exploration Crafting is an exploration and construction game that's clearly based on the famous sandbox game Minecraft. As in Minecraft, in Exploration Crafting, you can modify a virtual world made out of blocks.

Unlike other Minecraft clones, Exploration Crafting has a unique twist: the creative mode which although it is still a creative mode, doesn't have unlimited resources. Instead, it has a selection of the most popular resources from Minecraft and a few new ones as well. Besides that, you can't increase your inventory because you can't harvest anything from the world. So Exploration Crafting isn't an infinite game full of possibilities like Minecraft; instead, there are quite a few limitations.

Visually speaking, Exploration Crafting is practically identical to Minecraft. You appear in the middle of a world made of large blocks, waiting for you to explore it and build whatever you want (and can).

Exploration Crafting is a free Minecraft clone that will probably not meet your expectations but might be worth checking out anyway.