Paper Mario for Nintendo 64
It likely seemed like a series of bizarre choices at the time- a plot driven Mario title, mixing RPG elements with action ones to create an experience almost unlike anything else from the series' past (the Squaresoft developed Super Mario RPG notwithstanding, anyway). Oh, and also, it's all done in a style recalling paper cut outs. It was all something of a gamble on Nintendo's part, but arguably, it paid off big time; the Paper Mario series became one of the company's most beloved spin off franchises, all of the games bursting with charm and charisma that even non-fans of series can't ignore. This initial title in the series is a highly collectible game, and well worth picking up whether you're a die hard Mario fan or are curious to see the signoff series' origins.