Here are some maps I made a while ago and never bothered finishing/releasing.
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Blobs01:
One of the first few maps i made. It has lots of hills and small roundish islands.

Pics:
http://i.imgur.com/KAfmo.png
http://i.imgur.com/mG5MF.png

Download:
http://filesmelt.com/dl/blobs01.vxl
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Desert01:
Pretty self explanitory just a hilly desert.

Pics:
http://i.imgur.com/ib0Rz.png
http://i.imgur.com/0lB0K.png

Download:
http://filesmelt.com/dl/desert01.vxl
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Hallwayx2:
Something like the regular hallway map but it has 2 hallways which cross eachother in the middle of the map.

Pics:
http://i.imgur.com/lHBln.png
http://i.imgur.com/JDzK7.png

Download:
http://filesmelt.com/dl/hallwayx2.vxl
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koth:
A map with 2 round platforms for each team and a large tower in the middle with a moat around it.

Pics:
http://i.imgur.com/RvWQp.png
http://i.imgur.com/7gYh8.png

Download:
http://filesmelt.com/dl/koth.vxl
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Midground:
A map with 2 large land masses for each team and a river with a large island in the middle.

Pics:
http://i.imgur.com/wwVPp.png
http://i.imgur.com/vuEhf.png

Download:
http://filesmelt.com/dl/midground.vxl
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River:
Was a test for sculpting terrain in blender then rendering it as a heightmap.

Pics:
http://i.imgur.com/fWScZ.png
http://i.imgur.com/dSRBu.png

Download:
http://filesmelt.com/dl/river.vxl
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Twist:
A result of messing around with GIMP.

Pics:
http://i.imgur.com/NFXwt.png
http://i.imgur.com/ZoVrc.png

Download:
http://filesmelt.com/dl/twist.vxl
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Voronoi01:
An old map with lots of pointy islands made using the voronoi diagram generator in Blender

Pics:
http://i.imgur.com/KsFcZ.png
http://i.imgur.com/r5qC9.png

Download:
http://filesmelt.com/dl/voronoi01.vxl
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All of these were made using bildramer's bitmap converter and GIMP.
Go ahead and edit these maps to your liking as long as I get credit if you release it.

Also here are my other maps:
4rivers: http://ace-spades.com/forums/topic.php?id=1806
Grid: http://ace-spades.com/forums/topic.php?id=2065
Epic Landscape: http://ace-spades.com/forums/topic.php?id=3070

Im thinking about starting to mod AoS, I just want to start out with ironsight png mods, can someone tell me a good png editor, that is easy to use?