--- a/PresetMaps.wiki	Sun Nov 22 11:55:28 2015 +0000
+++ b/PresetMaps.wiki	Sun Nov 22 11:58:05 2015 +0000
@@ -111,4 +111,11 @@
 
 (Reasons for that: Edges are usually automatically smoothed on export; Easier to meet [http://www.hedgewars.org/node/704 Hedgewars Graphics rules, style constraints, guidelines]; Images are easier to change, adjust and maintain style)
 
-If you don't have one, check out the free open-source [http://inkscape.org Inkscape]: There are various [http://lmgtfy.com/?q=inkscape+tutorial Inkscape tutorials] online, so you should be able to get started easily.
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+If you don't have one, check out the free open-source [http://inkscape.org Inkscape]: There are various [http://lmgtfy.com/?q=inkscape+tutorial Inkscape tutorials] online, so you should be able to get started easily.
+
+= Sharing image maps =
+You can only play a game with a custom image map against other players online if all participating players have the image map installed under the same name.
+
+If any player does not have the image map installed, the game will fail to start and an error message is displayed.
+
+If you wish, you can post your custom-made image map in the [http://www.hedgewars.org/forum/19 Content Creations] forum.
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