Alright, long post. Heeeeeeeere we go.
I'll post the map with the egg first. Then, I'll post the image with a red circle around the egg.
EGG 1
8 Thoughts
- Click image to enlarge.

- Click image to enlarge.

EGG 2
Classic
- Click image to enlarge.

- Click image to enlarge.

EGG 3
All Your Base Are Belong To Us (Answer to Clue Zero Wing)
- Click image to enlarge.

- Click image to enlarge.

EGG 4
First Nations South America
- Click image to enlarge.

- Click image to enlarge.

EGG 5
Space (Answer to Clue Magic Wardrobe)
- Click image to enlarge.

- Click image to enlarge.

EGG 6
Woodboro
- Click image to enlarge.

- Click image to enlarge.

EGG 7
Duck and Cover
- Click image to enlarge.

- Click image to enlarge.

EGG 8
Tribal War - Florida (Answer to Clue Eagles and Spearheads)
- Click image to enlarge.

- Click image to enlarge.

EGG 9
Ancient Greece
- Click image to enlarge.

- Click image to enlarge.

EGG 10
USA New England (Answer to Clue Big Apple)
- Click image to enlarge.

- Click image to enlarge.

HONORARY MENTIONS
These maps DO have differences between large and small maps...props to them for finding them!
Midkemdil (Lindax found this)
- Click image to enlarge.

- Click image to enlarge.

Thailand (TheForgivenOne found this)
- Click image to enlarge.

- Click image to enlarge.

Steamworks (plurple found this)
- Click image to enlarge.

- Click image to enlarge.

There may be more, in which case I'll post them when I go through the answers. These were brought to my attention via IM.