Go for a round after that save in the highscore with "JTY".
Now you can use the below keys to activate the cheats:
[+] - one unit energy - repeat it a few times
 - collision check off
 - collision check on again
[rShift] - stopps ship
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CheatBook-DataBase 2014 is a freeware cheat code tracker that makes hints, Tricks, Tips and cheats (for PC, Walkthroughs,
XBox, Playstation 1 and 2, Playstation 3, Playstation 4, Sega, Nintendo 64, Wii U,
DVD, Game Boy Advance, iPhone, Game Boy Color, N-Gage, Nintendo DS, PSP, Gamecube, Dreamcast, Xbox 360, Super Nintendo) easily accessible from one central location. If you´re an avid
gamer and want a few extra weapons or lives to survive until the next level, this freeware cheat database can come to the rescue. Covering more than 22.030 Games, this database represents
all genres and focuses on recent releases. All Cheats inside from the first CHEATSBOOK January 1998 until today. - Release date january 5, 2014.
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