Another thing about Gilbert's work is their setting. His games stand out because they don't take place in Middle Earth or a galaxy far, far away. They take place in good ol' New York City. And it's not some post-apocalyptic New York City, but just plain old New York City. I think that makes things more familiar and thus accessible to non-gamers.

8 video game categories:

Action
Action games have a large amount of violence because of their fast moving paces. This is the category that almost all (mature-rated)M games fall under which are inappropriate for younger children. Some games are tamer but sometimes may contain suggestive material. Action games are man against man or man against machines or beasts. Some examples of such great games are Halo 3, Army of 2 , Crysis, Condemned 2: Bloodshot and Patapon.

Adventure and Role Playing

Adventure and role playing games are usually less violent than action games and usually have an air of being surreal or fantasy. Lots of these games are mixed with role play and allow the hero to initiate dialogue. Being less intense than action games, they often do include violence. These games tend to be among the most addictive due to the narrative fantasy genre. Top games of this catagory are Assassin's Creed, The Legend of Zelda:Phantom Hourglass, Bully:Scholarship Edition, Penumbra:Black Plague, Uncharted:Drakes Fortune.

Arcade
Arcade games can be almost anything from the aggressive Street Fighter to the Timeless Pacman. This genre includes games that cover the entire spectrum of ratings. Many older arcade games have been upgraded and turned 3Dimensional.

Strategy
Strategy games most often involve tactical movement of troops and/or players. These games may be warfare based or may be as simple as chess. The content of many of these games can be appropriate for children but they tend to be difficult to play. Combat is often slower paced and allows time for strategic thinking. Some examples are World in Conflict and Sins of a Solar Empire, Supreme Commander:Forged Alliance.

Simulation
Simulation games are often aircraft simulations. You get to fly a jet or a helicopter. Most have nothing more to them other than the destruction of enemies; rarely they use excessive language. Some games in this category include The Sims 2:Castaway, Ace Combat.

Driving
Driving games are mostly racing, but some are also crash & Bang or mission-based. Gamers usually get a choice of car and get better and better cars over time. Some of these games are Burnout Paradise, Project Gothham Racing 4, Dirt, Wipeout Pulse, and the highly addictive Grand Theft Auto Series.

Puzzle
Puzzle games are never rated higher than ‘E’ (for everyone). They all take logic and Thinking skills. A common puzzle game is Tetris. Many others are similar to Tetris or involve color matching technics. Many games incorporate puzzle aspects but are not truly puzzles. Some of the puzzle-incorporating games fall role-playing or action.