I'm very happy that 0AD is progressing so nicely. One comment, take it for what you will:
I played through the tutorial last night, and I can't remember the exact wording, but it was along these lines: "Females are weak and slow." Is that really how you want to start a game in the 21st Century? I realize the game doesn't take place in the 21st Century, but come on. You're pretty much insulting half of your potential audience in the first five minutes of the tutorial.