From Atomicboy Software:
Empires of Steel is a turn-based wargame. Form alliances, capture and trade resources, research new technologies, and form huge invasion fleets to conquer your opponents. Single or multiplayer, customizable maps, scenarios, and rules. Features: Single player (vs AI) and Multiplayer (Internet, LAN, PBEM); Trade Resources, Voicechat, Teams, share maps with other players; "We-go" turn system - all players setup their turns at the same time; Map and Scenario Editor; Rules Editor: create your own units, technologies, technology tree, city improvements. Empires of Steel is more than a wargame; it's also a platform for wargames. Upload/Download System: lets players share their maps, scenarios, and rules with other players.