- Couch co-op: own screen or split per player, each with their own UI and controls

- Multiplayer up to 16 players; host any game from pause, join Steam friends from the Start Menu

- Objectives sidebar replaces the Tutorial

- New Ladders for climbing cliffs; belts and rail improved

- Tougher waves; robots target structures

- Colonist renaming, level-up chimes, auto-repair, fewer stuck colonists

- New color palette and night lighting

- More settings: graphics quality, frame cap, full rebinding

- Faster loading