Portal:Dungeons & Dragons/Selected rulebook/2

Against the Giants (module code G1-2-3) is an adventure module for the Dungeons & Dragons roleplaying game, published by TSR in 1981. It combines the contents of three earlier modules: G1 Steading of the Hill Giant Chief, G2 Glacial Rift of the Frost Giant Jarl, G3 Hall of the Fire Giant King. The "G" in the module code represents the first letter in the word "giant".

The 1981 version was produced for use with the 1st edition Advanced Dungeons & Dragons rules. To recognize the 25th anniversary of TSR, an updated version, Against the Giants: The Liberation of Geoff, was released in 1999. Also in 1999, Wizards of the Coast published Against the Giants, a novelization of the adventure by Ru Emerson.

The original three modules play as a classic dungeon crawl, against giants under an external influence. The focus is on hill giants, frost giants and fire giants, three of the original evil giant types used in the Dungeons & Dragons roleplaying game.

The original "G" series modules formed the lead-in to an overall campaign set in the World of Greyhawk that then continued on an odyssey into the Underdark. These adventures included the "Drow" series of modules, D1 - Descent into the Depths of the Earth, D2 - Shrine of the Kuo-Toa, and D3 - Vault of the Drow. (D1 and D2 were later compiled into a single adventure, D1-2 - Descent into the Depths of the Earth). The campaign finally culminated with module Q1 - Queen of the Demonweb Pits.