Update: Contra Defense has been updated with English strings.
Custom Multiplayer Maps by greenonex
Flash info: greenonex managed to play with someone else on Battle.net on a Custom Map! However the procedure is kinda tricky. You have to know your opponent and replace a normal map in your cache folder by the custom one. Iggyhopper just released a video with 2 people (himself and Terin)! Read more.
Height Map by Grum
Grum while trying to crack down the height map file format (the one that tells every point what height it has) managed to make several interesting and funny pictures. I let you discover them.
We played a custom map with Bifuu a loooong time ago :P You just have to have everything so it doesn't desynch, including other modded files if there's anything...