General

When on briefing screen, you can start the mission by pressing Enter, so you don't need to touch your mouse and then move yourhand back to keyboard. This is useful, especially on Jupiter, where you have only a short time to start slowing down your fall.
Often is necessary to use autodestruction - the little button on the left side of HUD information panel in the game.
You can fly over the side edge of the screen to appear on the other side. However, any rock, meteor or other danger can damage the landing module and you can't avoid it, becouse you can't see it.
You can fly over the top edge of the screen. Your radar shows blinking red arrow at horizontal position of the module. The faster it is blinking, the lower the module is.
Your altitude is measured in units above the bottom edge ot the screen. Top edge is 600 units high.
Safe landing speed is lower than 40 vertically and -10 to 10 horizontally. Green light next to the speedmeter is indicating safe speed.
By pressing red cross button you can return to previous step, even back to planet selection.

Useful hints to planets

You can land not only on pads, but also on any solid and flat place. When waiting for orbit ship arrival, it is often better to "hide" your module to some safe place (especially on Mercury, Venus, Mars and other dangerous planets).
The best way how to set off explosives is to fly over it from one side to another side, if terrain allows it.
Explosion can kill Martanians. In the last Mars mission, you should try to kill at least two of them, else you have only a little chance to light all the pads.
Neptunian hurricanes are usually much stronger than your motors. You should charge against them from a long distance if you want to fly through them. Better is to overfly them above top edge of screen. Also, a module standing landed on the ground is much more stable and it is almost unaffected by the storms.
Sometimes on Uranus, it happens that game window is narrowed to a little piece about 50 pixels wide. It is a bug that we are aware of, however we could'n fix it. If it costs you some lives or antiScore, you'd better get used to it, life is cruel.
Pluto's gravity is so weak that you can land safely after falling from top edge of the screen without using motors.

Every failure which leads to destruction of the module means one more life.
AntiScore calculation is based on time on mission, used fuel and destroyed modules. Values used as coeficients for calculating these numbers differs level to level.
The most expensive fuel is on Pluto, the cheapest is on Jupiter.
Because time is also important,it is often better to try to catch leaving orbit ship, however this can mean destruction of the module if you rush too fast.
Destruction of module in first levels is more expensive than on the late ones. So, if you fail landing when playing the last mission, it is not so bad as if you fail in the first mission.