For two decades, the Metal Slug series has stood as the gold standard for run-and-gun arcade action. Known for its hand-drawn animation, over-the-top weapons, and that infamous "lonely prisoner" who gives you a much-needed armor vest, the franchise has a cult following that refuses to fade. For PlayStation Portable (PSP) owners, the ability to take these chaotic battles on the go was a dream come true.

However, with storage space on legacy devices (and modern emulation handhelds) often being limited, the demand for a has skyrocketed. But what does "exclusive" mean in this context? Is it safe? How do you install it? And which versions of the game are worth the download?