What film, show or game that is not necessarily 'underated' didn't have the level of social impact it deserved.
What's the antithesis of Arrested Development, Firefly or The Big Lebowski? Those may never have 'found their audience' but over time seemed to recognised by everyone. What are the deep cuts that you liked but it feels like everyone has completely forgotten they even existed.
It's sales were poor but the reviews were great. A fantastic adventure game with a great story and a world that felt so incredibly lived in. It had a bunch of interesting mechanics that focused on stealth rather than confrontation.
Playing it now the scope feels pretty small but it's still a very tight experience.