I'm much into sandbox games (minecraft, etc.) and I play recently blockscape and Patterns. They're pretty cool games IMO, though Patterns is currently better for me (at least until electric stuff in Blockscape is done) as it has physics - not only things fall when you remove supporting blocks, but it does also have structural stress, so you can't make column of dirt of infinite height.
Also playing lil' game called Retro Galaxy (galaxian clone in 3d).
What do you play?
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