Cheat Mode
Level | Novice | Ace |
2 | DHGJ KLFF | XDFT RLFF |
3 | GSDF BFPT | KJTR DBPT |
4 | RRHC FDVM | RVBP ZJVM |
5 | BPSX FDNF | BMNQ YLNF |
6 | LDFS DTKQ | LFMS DNBQ |
7 | PXSB SZNJ | PGHP CZNJ |
8 | DKXZ GZQK | DKDG BPQK |
9 | GKQB GHCT | GSYP ZLCT |
10 | DTRH RPFJ | DCZX RPQR |
11 | WZPK JYZX | WRTN JYSX |
12 | JDZFLKFV | JDPQ MLRT |
13 | SPNG DRRG | SPBX BMRG |
14 | SFGF JHDH | SPXP RGDH |
15 | LPFH PRFZ | LPFG NBGZ |
16 | TDKZ XSHX | TQWJ GZHN |
17 | DGBV KMNB | BGJK SZPQ |
18 | KJHG RJCB | PLMN HRTY |
19 | VBMQ RWTP | GLMR TRRC |
20 | LKFD SPBV | NHDJ PBCX |
21 | NHDC DKPM | LCML FLTC |
Note: There are 20 basic levels in the game. Level 21 is a repeat of level 1, but with UFOs instead of jets to shoot down. The password at level 22 is the same as level 2. You must enter the password for level 20 or 21 and play the game from there to get UFOs instead of MIGs. Entering level 21 in Ace mode gets you started all over again from level 1, but with World War I era tri-planes instead of jets or UFOs.
Flying cars
It is possible to replace the jets with flying classic cars. Something can be done in novice mode at level 6 that will result in a constant tone until you get to level 7. Level 7 will then start with classic cars flying at you instead of jets. The level passwords with the cars are identical to those with jets. You must duplicate some sort of game condition (complete all the first six levels with no damage? Complete level 6 with no damage and using only one plane?) to unlock the cars.