Check it out:
https://picroma.com/cubeworldIt's been hyped for more than a year and it's finally in public alpha. I could really see this being the next next "minecraft" (as in it gets really big). I got it and I am officially addicted to it. There's also a server feature, so maybe we could set up a little server and have a few of us play. It's fun alone, but from experience, it's much more fun with friends.