Money, speed & zones

How to reach the next zone sooner and keep your Pen earning, even while you're offline.

Basics

After you buy a trail in the Trails Shop, open the Trail menu and equip it. Do it again every time you upgrade.
When
Right after every trail purchase.
Why it works
A trail does nothing until it's equipped. Skip this step and you paid for nothing.

Can't reach the next zone: get Speed. Eggs take forever to break: get a better pickaxe. Losing animals on the way home: pick a safer zone or route. Pen full: upgrade the Pen.
When
Every time you have Cash to spend.
Why it works
Each upgrade fixes one problem. Paying for the one that's actually stopping you gets you to the next zone fastest.

Buying a trail and not equipping it
Open the Trail menu and equip it every time you buy one.
Entering a zone you barely have the Speed for
Keep a buffer above the gate. Carrying an animal slows you down.
Buying pickaxe Power before Speed
If you can't reach the next zone or keep getting caught, buy a trail and train first.
Taking risky trips for several animals
Make one safe delivery at a time and bank it.
Thinking breaking the egg is enough
Nothing counts until the animal is in your Pen: no Cash, no Index.
Waiting for the Index to pay out
Open the Index and claim each milestone yourself.
Using Steal an Egg codes, mutation lists or guides
That's a different game. Its codes, mutations and events don't apply here.
Spending all your Cash at once
Keep some Cash in reserve instead of emptying it on every shop visit.