webDiplomacy (previously phpDiplomacy) is a Web implementation of a popular turn based strategy game in which you battle to control Europe. It is not a game of luck: to win you must be diplomatic and strategic, forming and breaking allegiances and bargains with your friends and enemies. It features an interface intuitive and simple enough that seasoned Diplomacy pros and complete newcomers can play alongside each other.
Quantum Star SE is a browser-based space strategy and trading game played across a mapped galaxy against other players. Utilizing mining, trading, research, and production through easy-to-use tools, QS enables both broad micro-management of resources or more "aggregated" methods. Players compete, combat enemy fleets, and manage planets to become the "last man standing". No user downloads are required, and the game is free to host or play.
Solar Imperium is a Solar Realms Elite clone. In it, you rule a solar empire. The goal is to become and remain the most powerful empire. You can gain strength by buying forces, and you can gain size by colonizing planets. You start with some planets, and a little bit of money. You are required to feed your people and army, and to pay to maintain your planets and army. If you fail to do these things, disastrous results may occur. You are given several turns of protection, during which you cannot attack or be attacked, and cannot perform covert operations. This provides a way for smaller empires to build up their defenses and planets before they enter the real world.