Calling myself a game designer requires that I design game stuff from time to time. Here, find Open Game Content for your favorite medieval fantasy roleplaying game.

This Old Rule: In each article, I take a rule that isn't working the way I'd like and spruce it up a bit. Read and judge for yourself whether you like the changes I make or not.

• Diplomacy skill: I try to take out the flat DC's and the need for constant circumstance modifiers to make the Diplomacy skill more precise and easier to run.
• Polymorph, Part 1 and Part 2: An two-part attempt to reduce the abuses and clarify the confusions surrounding shapechanging magic.
• Knowledge Skills: A variant skill use that proves knowledge is power. By Amber E. Scott

White Hats: The good. Here you'll find classes (prestige or prestige-free), feats, spells, and other tools to turn the forces of darkness into Hamburger Helper™.

• The (Even More) Hidden Book: A collection of illusion spells that never made it into Dragon Magazine.
• Elemental Infiltrator: Four clans of thieves that have allied themselves with the mysterious power of the Elemental Planes.
• Metamagic Feats: Now metamagic can be for apprentice wizards, too.
• The Divine Trickster: Why should arcane caster be the only ones to get sneaky?
• Change is Good, Except When it Happens to You: Five nasty transmutation spells to help shake up your wizard.
• Knowledge is Power: Four powerful Divination spells for ignorant wizards.
• Fighter Feat Chains: How to fight a room full of enemies and win.
• The Champion: With a single magic word, he transforms into a celestial powerhouse! My first new base class.
• Bearer of the Ancestral Weapon: Masters of steel and spell, these heroes channel their ancestors to increase the might of their magical weapon.
• Tools of the Trade: Sixteen feats to let your fighter master his favorite gear.
• Fey Druids: At last, you can play the Snow White druid, who charms animals with a high Charisma rather than a high Wisdom. Five new feats show you how.
• Halfling Rock-Skipping Champion: Originally posted on the Wizards.com boards, this prestige class for the wee folk has been revised to make it 100% OGC. Enjoy.

Black Hats: The bad and the ugly. Here are your monsters, villains, and traps. Everything out to maim your character can be found here. Picture a big "NO PLAYIRZ" sign hanging on the door to this treehouse.

• The Literati (Part 1): An organization of evil informations gatherers might be stalking your PCs right now... By Amber E. Scott
• The Literati (Part 2): Two factions and the spells and feats of the Literati. By Amber E. Scott
• The Literati (Part 3): The leaders of the Literati and the sources of their power.By Amber E. Scott
• Gingerbread Golem: Run, run as fast as you can. You can't get away from the gingerbread man. (CR 2)
• Charred Horror: The restless corpse of a burned treant is back to kick your druid's ass. (CR 9)
• Piranha Swarm: Hundreds of teeny tiny fish eating the heroes. What else do you want? (CR 3)
• Fenixborn: A fiery Celestial to smack your more duplicitous heroes around a bit. (CR 8)
• Tunnel Guardian and Temple Gargoyle: Keep pesky heroes from coming back year after year! Train one of these two guardian monsters to kill adventurers dead. (CR 4, 6, and 13)