Above and Beyond is a pretty large and well-polished game. You play a programmer on their first day of work; the first third consists of getting into work after losing your card, the second third consists of getting a form signed by jumping through exhausting hoops, and the third is an endgame dealing with a conspiracy.
The feel is a mixture of spy stuff and extreme tedium of work. The walkthrough is 600 moves or so.
I was pretty impressed with this game. It's linear and hard, but it's fun walking through a dozen rooms with 2-4 offices each and meet all of the workers.