Outcast - Second Contact, free on Humble Bundle. · 11:42am Nov 23rd, 2018
Don't usually like to talk about the humble bundle ones since I feel they've got a few more hoops to jump through then any Steam giveaway, but this one cough my eye. Never finished the original since it was such an infamous resource-hog, but I do remember my jaw frequently dropping at the graphics.
I mean, just look at this: