Collect the set type platform game.
Another quickie for infinite lives, just type it in and use it instead of your original header.
When I tested this hack it caused the game to crash on loading. Maybe I have a different version? I provide a link for you to download this hack anyway.
Click here to download this hack (TAP format) or Click here to download this hack (TZX format).
10 CLEAR 65535 : FOR N=65000 TO 65012 :
READ A : POKE N,A : NEXT N
20 LOAD "" CODE
30 POKE 64776,201 : RANDOMIZE USR 65000
40 DATA 205,238,252,175,50,233,135,33,8,
253,54,49,233