RPG Toolkit Development System 3.1 — http://sourceforge.net/projects/rpgtoolkit/

RPG Maker List — http://rmlist.rpgsource.net/

Wikipedia entry on RPG Makers — http://en.wikipedia.org/wiki/RPG_Makers

RPG Maker XP — http://tkool.jp/products/rpgxp/eng/

RPG engine — http://www.explore-rpg.com/

RPG blog — http://xnafantasy.wordpress.com/

RPG-related tutorials — http://www.rpgrevolution.com/tutorials/game-development.html

Official XNA site — http://creators.xna.com

Ziggyware — http://www.ziggyware.com

XNA development — http://www.xnadevelopment.com

The ZBuffer — http://www.thezbuffer.com/

Reimer Grootjans’ site — http://www.riemers.net/index.php

Shawn Hargreaves’ blog — http://blogs.msdn.com/shawnhar/default.aspx

XNA Team blog — http://blogs.msdn.com/xna/default.aspx

Michael Klucher’s blog — http://klucher.com

Virtual Realm — http://www.virtualrealm.com.au/blogs/

Do as I say, not as I do… — http://amapplease.blogspot.com/

Nick Gravelyn’s blog — http://nickgravelyn.com/

Random Chaos — http://xna-uk.net/blogs/randomchaos/default.aspx

Catalin Zima — http://www.catalinzima.com/

GameDev.net — http://www.gamedev.net

Reiner’s Tilesets (many RPG-related assets here) — http://reinerstileset.4players.de/index.html

International Game Developers Association (IGDA) — http://www.igda.org

Game Programming Wiki — http://www.gpwiki.org

AI forums on GameDev.net — http://www.gamedev.net/community/forums/forum.asp?forum_id=9

Game AI for developers — http://aigamedev.com/

Links and resources for AI — http://norvig.com/

Generation5 (an old site but you might still find some good information there) — http://www.generation5.org/

The Game AI Page—http://www.gameai.com/

Wikipedia, game AI — http://en.wikipedia.org/wiki/Game_artificial_intelligence

AI Wisdom — http://www.aiwisdom.com/

AI-Depot, Artificial Intelligence in Game Design — http://ai-depot.com/GameAI/Design.html

Simple A* tutorial — http://www.policyalmanac.org/games/aStarTutorial.htm

Simple A* tutorial using Pac-Man as a base — http://www.geocities.com/jheyesjones/astar.html

http://www.kynogon.com/products/technology/index.html

http://www.trusoft.com/ac_for_games_developers.html

http://www.simbionic.com/indexjs.htm

http://www.simbionic.com/games.htm

SourceGear Vault — http://www.sourcegear.com/vault/

SourceForge.net — http://sourceforge.net/

Tigris.org — http://www.tigris.org/

Comparison of revision control software Wikipedia page — http://en.wikipedia.org/wiki/Comparison_of_revision_control_software