Games: Video Games: Simulation - Open Site
A volunteer-run encyclopedia categorized by genre. Includes information, review overviews, hints, release dates, and artwork.

Mods to the Max
Mods for roller coaster simulations, including Disney Coaster, Roller Coaster Tycoon 3, No Limits, and Scream Machines. Offers modules, tools, and forum.

MiGMan's Combat Diary
Hints, tips, maps, checklists and in-depth play guides for over 200 Flight, Land, and Space Combat sims.

The Simulation Site
Includes downloads and information on a variety of games.

CombatSim.com
Offers news, downloads, and forums.