I finished Sin only recently and enjoyed it greatly for the most part. The closest thing I can think of is Duke Nukem 3D. Sin is similar in many ways, like the urban architecture and the over-the-top humor. It's just a great throwback to a time when shooters still had a sense of humor about themselves. On the downside, some of the missions will have you go on key searches, which can get grating and a few of the levels are a bit too "mazey" for my taste.
Then there's the expansion pack "Wages of Sin", which I enjoyed even more than the base game. It was made by 2015, which went on to create Medal of Honor, which in turn led to the Call of Duty series and its modern brand of "cinematic" shooters. There are already hints of that in "Wages of Sin", with some elaborate in-game cutscenes (which are done surprisingly well! The game opens with a car chase which looks as good as any car chase ever done in the Quake 2 engine.) and somewhat more streamlined level design (which I didn't mind, since this basically just gets rid of the "wandering around maze-like levels, desperately searching for that goddamn keycard"-aspect of the base game). As far as I'm concerned, "Wages of Sin" is the perfect combination of oldschool- and newschool-shooter sensibilities. It also has some very nicely designed, unusual environments.
So, yeah, for $2,50 => get it!
Post edited June 15, 2014 by fronzelneekburm