According to a Reddit thread, a BitLife mod is a customized version of the game that allows players to acquire features or content without the need for in-app payments or subscriptions. According to a Reddit post, such changes frequently provide access to products such as “God Mode” (which allows you to personalize character traits and life events), “Bitizenship” (which unlocks extra game features and disables adverts), and infinite in-game currency without the need to pay real money.
