I have been looking everywhere trying to find out how to make a fast map like "fastest nasty.scm" where there is minerals right above your base (command center, nexus, hatchery). All I have been able to find is where you can download fast maps. If someone could help me with this I would greatly appreciate it.

Download this map editor

Open it, go into Options, Units. Check "Allow Stack." Uncheck "Require Mineral Distance."

Then just place a bunch of minerals on top of each other next to your players starting locations.

Thanks, I didn't realize I needed a different program.

Make sure your fastest map is balanced, the top-right player shouldn't have more room than the mid-left player.

Also, make a "Slowest Map Possible" for fun.

So 1 mineral field with 1 mineral that is recreated when mined?

No, by having 1 mineral field on the other side of a 256x256 map.

Plus a maze to get to it.

Make it 2 mins, and make a barracks and a marine cost 1 min each. Whoever gets it first and gets to return to their base, or kills enemy SCV, wins.

I think terran wins in that situation... Fast attack and ability to lift makes you invincible, while you kill their nexus/hatch.

Have buildings with 255 armor blocking the minerals that respawn when you leave the area.

It should be melee. Play on Slowest speed as well.

Don't forget 500 Neutral buildings blocking the path.