Roblox maintains an official "Starter Kit" library. While it isn't the famous Prison Life, there is an official "Prison Life Kit" available in the Creator Hub. This is 100% safe. It teaches the basics:
Here is the critical warning that most articles skip. Searching for "uncopylocked prison life" is fraught with danger. uncopylocked prison life
Because the original creator (Aesthetical) never officially released an uncopylocked version of the final game, most files claiming to be the real deal are "fake uncopylocks." Roblox maintains an official "Starter Kit" library
Standard prison life has a fixed map. Why not make the prison expand? uncopylocked prison life