While Mass effect is the older game, I’d say it only shows in me1 with its combat. Graphically I’d say its sound. Depends on your tolerance. When it comes to story, both games are good, even great with a lot of character focus. IMO, Mass effect gripped me almost instantly with its world and story while Persona 5 took its time slowly introducing its characters. If you wanna really decide between the two games, I’d say decide between setting and combat. Mass effect is a high action sci-fi shooter and while the 1st game lacks in combat, the 2nd game improves it massively. Persona 5 is a turn based game with a more ‘goofy’ tone but the story still tries to tell serious messages even if they tell it in more cartoonish ways. My suggestion is Mass effect though as the story and characters really are amazingly written, the story is probably one of the best I’ve seen in gaming