Gemini is a space launch simulator allowing the control of a launch vehicle from countdown to orbit acquisition. The scenario is a bi-dimensional non rotating Earth. This is to avoid excessive three-D complications in terms of both graphical interface and maneouver degree of freedom.
With Gemini your task is to launch a rocket and guide it through the atmosphere by accelerating in the proper way until a safe and stable parking orbit is achieved. To do this you can act on different controls in order to 'steer' the launcher. But beware, the rocket is not a Star Wars fighter and you have several limits. You can't just do whatever you want, but you need to take into account the changing weight of the rocket, the gravity effect on the trajectory, the limited fuel and the aerodinamic drag effected by the atmosphere while trying to get out into space.
Our Review: Gemini is quite a good space shuttle launch sim. The graphics are very basic, but its sounds and game play are much better than you would expect from a casual glance. There are several different missions, from establishing an earth orbit or docking with another shuttle to preventing a meteor hitting earth. Be warned however, that for the most part Gemini is as realistic as possible so don't expect to weave around rock and space debris like they did in Armageddon. The help file is pretty extensive but doesn't get installed so, if you can't find it, check inside the origional zip file.