This game is made by Renovation in the year 1990. This is an action-game. With the stick you move, with A you toggle the speed, with B is shoot. Aliens want to colonize the earth, you must defeat them. There are seven levels. Each level has an endboss. When you shoot a capsule you get a letter. 'M' is guided missile, 'L' a big laserand with 'P' you get a satellite. A second 'P' gives you a second satellite. You have six continues.
This is a good game. It makes much fun to use the extras. The intro is nice. Like in "X-out" there is a lever under water. You can select the difficulty in the options-menue. The levels are scrolling vertical or horizontal. There is a level where it scrolls backwards.
The controls are good, it is good to play. There is music in the whole game.
I played it the second half of April 2020
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