Delete lines 80-100 if you don't want the option. Each gives an infinite amount of whatever is in the REM statement. Run this hack and play the tape from the start.

Click here to download this hack (TAP format) or Click here to download this hack (TZX format).

10 FOR f=23394 TO 1e9 : READ a
20 IF a>255 THEN GO TO 40
30 POKE f,a : NEXT f
40 LOAD "" CODE 24023 : BORDER 0
50 CLEAR 37499 : POKE 24097,91
60 RANDOMIZE USR 24023
70 DATA 205,98,5,245,175
80 DATA 50,245,254 : REM laser
90 DATA 50,105,140 : REM oxygen
100 DATA 50,129,140 : REM lives
110 DATA 241,201,999