I kinda like <a href="http://ogame.org" rel="nofollow">http://ogame.org</a> ... mostly because I don't really play.<p>The fun come from automating all the tasks that I would have to do if I was playing.<p>So I made this library in Go <a href="https://github.com/alaingilbert/ogame" rel="nofollow">https://github.com/alaingilbert/ogame</a> that allows you to create a bot to do everything you could do in the game.<p>So now, It all depends on how you want to implement the logic. (that's the fun part for me)
I personally really enjoy Johnny Upgrade and Combat: Online. They're in my gaming site, games.instantfloppy.net. Originally by Gameshot and Nadgames respectively.