After this author cloned
Salamander he followed up with this game, which is a.. Tribute? Semi-clone? of the same game Konami game (Salamander was released in North America as "Life Force") Controls are via the arrow keys, with X utilizing a power-up, and Z shooting (X also shoots, for some reason). Escape will pause and unpause the game. The game is a bit more generous than the Konami game (you have continues, among other things) although the solar flare 3rd level is still painfully unfair.
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