1-Ups are special items in Star Fox, Star Fox 64, and Star Fox: Assault.
In Star Fox, they can be achieved by hitting one of the three objects.
In Star Fox 64, they can be earned by points or collecting three golden shield rings a second time on one stage. They can also be found on some of the stages, but they are very rare. They are in a shape of an Arwing
In Assault they are usually hidden in either places, that are hard to reach or that nobody would expect.