Blockland’s versatility and building has always been its’ main draw for me. The vastness of game mode/server possibilities (though dependent on the community/add-on devs) is great, and its’ simple heavily LEGO inspired building and aesthetics are wonderful. When you think about the fact that LEGO themselves were interested in Blockland/Badspot at one point, you know it’s damn good.
No bullstuff terrain blocks and crafting, or gameplay where you have to do x to earn y bricks. It’s primary feature is being a sandbox game on the truest form, and building with virtual LEGO bricks. That’s always been my favorite thing about it, and where all these other building games fail.