Age of Empires is a realtime strategy game produced by Microsoft. It starts in the Stone Age, and the idea is to progress your villiage through to the Bronze Age, while fending off enemies (either the computer or other players). The sites listed here provide hints and strategies on how to succeed at this game.
Unofficial Quake Technical Specification. Explains many of the underlying parts of building a Quake level, not specific to any particular editor. Also an explanation of Quake-C. Unfortunately, entirely based on Quake, not Quake II.
Basic low-level technical information about the Quake engine, with information about building levels for use with the Quake engine. Unfortunately, also entirely based on Quake, not Quake II.
Back before multimedia (not that long ago), these games were actually fun. Infocom provided one of the better sets of interactive fiction games. Most of them were purely text-only.
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