I'm making a Nemesis Online, a remake of the saga of games Nemesis, Gradius and Salamander that Konami made in the decade of the 80.
It's a free online game up to 8 players simultaneously on Internet. It has got a Ranking of medals and score on site
http://www.nemesis.remakesonline.com... and have a stage editor in order that the people collaborate creating new phases.
You can free donwload game at
http://www.nemesis.remakesonline.com...