So, I'm looking for a good alternative to minecraft, preferably with more or better gameplay elements.
Here's the ones I know of:
Basically a higher resolution minecraft. The basic blocks are much smaller, and the are many more shapes of blocks, like wedges and such. It's also not using java, so it's doesn't have the same technical issues as minecraft. Haven't tried this yet, but since there really isn't much gameplay beyond building with smaller blocks, I'm skipping it.
Cube World (Unreleased)http://wollay.blogspot.com/
Also search youtube for videos.
Minecraft meets 8 bit RPGs. Very colorful, with decent combat gameplay. Less emphasis on building, and more emphasis on exploring and combat, travelling across procedurally generated kingdoms.