Maps are gone
RTB is gone
Ephi is gone
Speedkarts and mod terrain are now default
Default bots
Default doors
Teleport door bricks
Shaders and shadows are now in the game, although for some computers they'll destroy the framerate
Customizable "environments" (skyboxes, ground textures, water, etc)
Speedkart servers
Gamemodes
Blockland on Steam
Unlimited mining (idk how old this is though)