A-OK! The Wings of Mercury is a realistic simulation of the Mercury spacecraft. It features 3D graphics, fully functional control panels, networked simulations, and a complete manual. Not a game, A-OK! WoM is so realistic, you will use the actual checklists used by the astronauts. Orbital and Sub-Orbital missions can be simulated. A Mission Control Center simulator and special A-OK! Tools are available to registered users. Check out all the features. Registered users will be entitled to free updates from version 3.0 to 3.9.