Worlds in neighbouring slots of the same type boost each other by 40% each. Tap a slot, then tap Equip on a world.
Permanent upgrades bought with Dark Matter. A Big Crunch resets them. Hold any row to see what it does.
Recent events, first finds, Codex milestones and collapses (last 50).
Three separate saves on this device, saved automatically. Keep one as a throwaway to test and reset. Export and Import use the slot you are playing.
Every achievement gives +1% to all stardust income, and new ones keep appearing as you grow.