[Rizz]

Copyright affects more than just assets, it also includes e.g. creative physics. The idea of an RTS in a medieval time period is not copyrightable, but copying all the specific choices AoE2 made even when those choices weren't made because the setting required them can very well be infringement. Calling yourself a clone will also not help you in a court.

Read up on some judges' verdicts on video game clones at: http://adlervermillion.com/copyright-illustrated-video-game-...