So, I was thinking, and each map doesn't really impact the game much other than the length of the map. So I thought that it would be cool to implement... modifications for each map.
You can also choose whether or not this plays a role in your game. (By that I mean a little checkbox in the "Select Empire" screen.)
So:
Castle:
Castle Archers and Castle Deads get a boost in damage.
Juggerknights get a small speed buff.
Speartons have more health.
Swamp:
All units, except for Giants and flying units, move slower.
Magikill's Electric Wall attack and Medusa's Venom Flux attack get large buffs.
Meric heal and auto heal get small buffs.
Desert:
All units, except for Deads, Marrowkai, and Juggerknights, die after 5 minutes, because of lack of water.
Order Miners can build Pyramids at the cost of 400 gold and 300 mana that basically are large pyramids that units can hide in and become undetectable. This must be researched for 200 gold. These pyramids cannot cover any prexisting structures (like rows of gold or the center tower). Opposing players can enter these pyramids, but they will not know what is inside until they get inside. Only players with units inside the pyramids may see inside of the pyramid.
Forest:
Archidons can climb trees and basically become Albowtrosses.
Juggerknights can cut trees and kill all Archidons on those specific trees.
Shadowraths are undetectable in cloak because it's easier to hide.
Chaos Miners can build Miner Walls, but it must be researched and it costs more.
Gates:
(YJang's Idea) "The units inside the castle(garrisoning) will heal twice as fast and your enemy can go inside your castle and kill all kinds your units, but your enemy in there won't heal in there. You can buy the gates toggle for 300 golds, 400 mana, you can toggle the gates on/off, so you can make your gate close and open. When the gate is closed the enemy cannot go inside your castle, but they can still break the gate. The gate's health is high as 3 miner walls. When your gate breaks, you can still replace your gate by 300 golds and this doesn't need to be researched and it is miner's ability."
Ice World:
Ice traps randomly appear across the map. These traps are invisible, and they will cause whoever steps over them to fall and basically be stunned.
A random ghost penguin will appear at the middle. The penguin is unkillable and basically just slips and slides and stuns stuff on both sides.
Grass Hills:
Many hills randomly appear across the map. When climbing a hill units are slower, at the top of a hill Archidons, Deads, and Enslaved Giants have more range, and when running down a hill units are faster. Flying units completely ignore this.
Crawlers receive a small speed boost.
Halloween:
Shadowraths are undetectable in cloak.
All Chaos units receive a small buff in regenerating health.
So, what do you guys think? Feedback please, and ideas for Gates, please!