Stinger

1. GZNGNLSP Keep weapons after death
2. PAXKPGLA Start with 1 life
3. TAXKPGLA Start with 6 lives
4. PAXKPGLE Start with 9 lives
5. OZVKKLVS Infinite lives
6. YGNGAKTL + PAVKTGAP Start with Dual Cannons
7. YGNGAKTL + ZAVKTGAP Start with Laser
8. YGNGAKTL + GAVKTGAP Start with Shoot Right
9. YGNGAKTL + AAVKTGAO Start with Shoot Left
10. YGNGAKTL + APVKTGAP Start with Five Direction Firing
11. YGNGAKTL + AZVKTGAP Start with Three Direction Firing
12. YGNGAKTL + AGVKTGAP Start with Force field
---For the last five codes, you must wait for the "demonstration game"
to start by itself before pressing "Start". The display will read "Stage 1," but each code does warp you to the correct stage
13. GZOGIGSA + PAEGPLPA Start at stage 2
14. GZOGIGSA + ZAEGPLPA Start at stage 3
15. GZOGIGSA + LAEGPLPA Start at stage 4
16. GZOGIGSA + GAEGPLPA Start at stage 5
17. GZOGIGSA + IAEGPLPA Start at stage 6