See Ballgame 2 HEX-code, Cheat-code here!

Ballgame 2.The Interactive Demo

Unlimited lives
BALGAME2.EXE
00006A7F: FF 90
00006A80: 0E 90
00006A81: 2A 90
00006A82: 2C 90

Unlimited bombs
BALGAME2.EXE
000037C5: FF 90
000037C6: 0E 90
000037C7: 5E 90
000037C8: 2C 90

Unlimited time
BALGAME2.EXE
0000404E: FF 90
0000404F: 0E 90
00004050: 5A 90
00004051: 2C 90

Editor
                                        
Start the game with ballgame 'Alt + 210' 'Alt + 211' 'Alt + 212' 'Alt +
213', but without the single-quotes.