OGame is a free browser based Sci-Fi strategy game. It is set in space in a future where humans have colonized the universe. You will start from a random planet in the galaxy. Slowly, you will build an empire through trade & commerce and by organizing attacks on other planets. At the same time, you have to defend your self against other raiders.
You have to build ships and buildings to support your empire. Resources come from three main sources- Deuterium, Crystal and Metal. To secure these resources, you are expected to make alliances with other players to promote trade or even raid your enemies and take their resources. There are a series of tutorials to help you progress in the game so you aren’t fending for yourself like some other MMOs. You can upgrade your capabilities by acquiring new technologies. It will help you colonize new planets and reinforcing your empire and planets with interplanetary missiles, shields, plasma turrets and lasers. You can even acquire a Death Star if you collect enough resources. OGame is very user friendly. Though there’s not much in the way of graphics (OGame is primarily text based but that hasn’t stopped it from acquiring almost 2 million members.), it is surprisingly interesting and will have you hooked in no time.