Extralives

1 clue
Unused hearts, in video games
Similar answers:
Abillionlives
Afterlives
Alittlebitextra
Alittleextra
Anextradividend
Arridextradry
Blacklivesmatter
Blackolives
Burlives
Censusextract
Clivestaples
Comesfromolives
Copperextractor
Daisofourlives
Daysoflives
Daysofourlives
Dayspaofourlives
Dazeofourlives
Dextral
Donetoextract