First 64 blocks are PvP free.
After that, comes a 12 block no build zone.
In 512 blocks, no TP.
World is limited at 10 000 blocks.
No hax, anti-xray countermeasures are in place.
You can find other players by building structures called trackers:
https://www.youtube.com/watch?v=zjHUI0VNBrE
Mushroom soup heals, so pvp is nicer.
Teams, gold economy, warps, tps,
combat logging leaves a ghost that drops your stuff when killed.
Mob catching, using a stick.