I gave up on "All Over Planet", as it contained way too many resources compared to the number of players. It didn´t look like my game would ever become interesting. I could have played at a higher difficulty, but the AI had access to tons of resources as well, so it probably wouldn´t have made any real difference. Also, there was a txt-file attached, but it wasn´t properly named. It´s pretty difficult to figure out that it´s the readme for that map.
I might try one of the other maps sometimes soon.