Lief098 | Original Super Mario Bros - Infinite Lives - Turtle Tipping @Lief098 | Uploaded March 2009 | Updated October 2024, 3 hours ago.
This is my favorite method of getting infinite extra lives, known by many as Turtle Tipping. This method works in most sidescroller mario games. This isn't always the easiest method, however, as it requires split-second timing and pixel-perfect jumping.

Enjoy!