I have to go way back and vote for the Shenmu trilogy. Open world and RPG.
I agree that Half Life for action adventure.
Definitely Portal 2 and the Talos Principal for puzzle.
Rocket League is awesome and so are the Skate games.
Crazy Taxi and Paradise City belong somewhere too
I have family deep in Appalachia where education isn't much of a priority there, most drop out to help farming, coal mining and helping the family whatever way they can.
One man I knew who dropped out at an early age was probably the best mechanic I've ever seen. He could fix just about anything, cars, appliances, you name it.
One instance I recall was that there was a boy with either downs or on the autism spectrum. Back then there was no distinction but I digress. This boy had an old, beat up and very cheap 8 track player that he absolutely loved and couldn't ever part with it. The mechanic was able to keep it working for years and years.