9 Rarest & Most Valuable PS4 Games You Might Own

1. Saturday Morning RPG

Estimated Value: £120-£200

Saturday Morning RPG, like its title suggests, takes inspiration from the characters, plots and look of classic Saturday morning cartoons. Split up into different episodes, the title gives you more control over combat than most Japanese RPGs, but it's still one of the best contemporary releases in the genre.

There's been a huge boom of interest in JRPGs recently, and this amazing indie title was one of the few embraced by this hungry audience. Consequently, the mere 1980 copies made for the PS4 were quickly snapped up, being resold second hand for anywhere between £120-£150.

A little stranger though is the fact that the PS Vita version - which had more copies manufactured for it - is even more of a collector's item, retailing close to £200 at the time of writing. Thanks to the continued success of the genre, the more players catch onto the charms of Saturday Morning RPG, the higher its price is going to climb, and there's a good chance it could be the most coveted release by the time the generation is out.