An extra life in a game is read as a second chance and relief from the fear of a single mistake. It can reflect a wish to try again without losing everything.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.