<a href="https:&#x2F;&#x2F;codecombat.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;codecombat.com&#x2F;</a> maybe?<p><a href="http:&#x2F;&#x2F;www.codeandconquer.co&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.codeandconquer.co&#x2F;</a> is vaporware at this stage.<p><a href="https:&#x2F;&#x2F;www.battlecode.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.battlecode.org&#x2F;</a> is also great fun each year. Not sure if it continues running after the competition is over.<p><a href="http:&#x2F;&#x2F;aichallenge.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;aichallenge.org&#x2F;</a> hasn&#x27;t run either for awhile unfortunately.