I've been playing this for a few weaks, and I'm currently progressing through the single player campaign as it really helps leveling up and I find the multiplayer really hard.

I like playing custom games with AI's but I've only got 6 maps.
Europe
Small Earth
Medium Earth
Earth
United States
Double Earth

When I level up I unlock 5-6 maps and it says I can use them when creating single player or multiplayer levels, but when I try to create a game, only those 6 maps show up, I made another account, leveled it up to level 11, and only those 6 show up, where the hell are the other maps?
Please help, those maps are becoming more boring with every game.

(Oh lord, your name made me initially mistake you for a well known forum troll...)

I think I know the source of your problem, though.

On the "Map" selection tab, did you change the "Featured Maps" to "All Maps"?

Here's a gif explaining it:



I have no idea why Featured is the default option and that can't be changed, but you have to take off from it if you want to see all other maps. Yeah, it's pretty annoying. Specially because "Featured" is a very arbitrary decision by Fizzer, seeing as only 3 (some would argue less) of these maps are actually good.

yes I always forgot to hit apply to. make sure to hit apply

O.O i'm saving that gif link somewhere