The incredibly versatile AtGames Legends Ultimate home arcade has its latest weekly update. The big features for this week are enabling competitive online leaderboards for the following three arcade games:

• Gravitar (a 1982 color vector arcade game with gravity-based gameplay elements)
• Liberator (a 1982 trackball-controlled arcade game that evolves the concepts first established in Missile Command)
• Saint Dragon (a horizontally scrolling shooter from 1989)

You can read about those and the other updates in the official release notes. Next week’s update, which will head into the Independence Day holiday, is said to be a big one, with several major new features.