Games which not only attempt to accurately represent the environment but also the users/vehicles interaction with it. The interaction components are an integral part of the game and are stressed over the action aspects in order to represent the environment better. Another key characteristic is that gameplay and controls are often much more complex than in action games.
Simulation games that can be played in your web browser should be submitted to Games: Video Games: Simulations: Browser Based.
Games that are under construction should not be submitted until they are complete. Site visitors should be able to download a playable version.