Graphics: 4.5/5 While it does vary depending on the map, (Whether it is user or Valve created) for the most part, the graphics look really good, especially since considering this game was released so long ago. They aren't mindblowing, but they are nice and sharp. A downfall is the lag that seems inevitable when there is a lot of stuff going on at once, or when there are several people on screen at once.
Sound: 3.5/5 Pretty average. The BOT dialogue is alright, but they really do just repeat themselves over and over again after a short while. The guns don't sound very good, either. Not terrible sound, but not award winning.
Control: 4/5 A classic PC FPS. WASD to look, mouse to move/strafe/shoot. Other letters on the keyboard also have different uses. Not much to say, but it really is nice to finally play a shooter away from the 360.
Fun: 4.25/5 CS:S is a fun game for a number of reasons. First off, although it doesn't really affect the fun factor at all, it is pretty inexpensive at $20. Secondly, there are a solid number of sites where you can download some new maps to play with other people and/or bots. There are SEVERAL great maps, including ones that emulate The Simpsons's own Springfield, a pool, office, et cetera. While the game takes some getting used to, (It is difficult to play online. Everyone seems to get insta-kills... look it up.) CS:S is a nice change from a console FPS. It is old, but now it is only twenty bucks, you can download it digitally, it has a fanbase that seems to be running VERY strong, and the gameplay is virtually endless with the number of free maps available. Definitely recommend this game.