I4: Oasis of the White Palm
I5: Lost Tomb of Martek
Three of the I-series of AD&D adventures were grouped and published as a single book under the title Desert of Desolation. The combined work includes some reworking of the original modules and adds some additional details - most notably, a campaign level map linking all the adventures and an ancient script for the writings used throughout the adventures. The result is a module that is nearly a campaign in itself.
The module includes a fold-out map of the desert region and several color handouts for players. Dungeon maps are provided in a small accompanying booklet. The module is written as a single story and plays as a large adventure (vs. a series of related modules).
Pharaoh is an Egyptian-styled adventure that includes a pyramid map and a trap-filled maze. In Pharaoh, the player characters (PCs) are driven into the desert for a crime they did not commit. The characters journey to the sunken city of Pazar and from there must travel to the haunted tomb of an ancient pharaoh. While in the desert, the characters encounter the spirit of Amun-Re, a pharaoh cursed to wander the desert until his tomb is robbed. Amun-Re begs the PCs to remove his staff of ruling and Star Gem from his tomb to break his curse. The tomb was built to be thief-proof and has so far lived up to its reputation. While in Amun-Re's pyramid, the characters can use an item called the dome of flight to control or reverse gravity; carelessness can cause them to fall upwards. The palm trees in this room bear exploding fruit. The characters also encounter a maze with numerous traps. The module contains wilderness maps, and a number of smaller adventures as well.
Oasis of the White Palm
In Oasis of the White Palm, the PCs arrive at the Oasis of the White Palm, which is on the brink of turmoil. Shadalah, who is to be the bride of the sheikh's eldest son, has been kidnapped. The sheikh believes her to be held by his enemies somewhere in the oasis. The PCs must solve the mystery before they can progress further. Once the characters make the contacts they need at the oasis, they continue to the temple of Set and the crypt of Badr al-Mosak, and the adventure concludes in the city of Phoenix; there, the PCs must obtain the three Star Gems (the one from Amun-Re's tomb in the previous adventure and two more introduced here) and free the djinni if they plan to move on to the next module. The Oasis of the White Palm module contains wilderness maps, and also includes a number of smaller adventures.
Lost Tomb of Martek
The goal of the PCs is the tomb of the millennium-dead wizard Martek. The tomb lies in the vast Desert of Desolation, and the majority of the adventure takes place within Martek's tomb. The adventurers have to cross a sea of glass on skate-ships, and then pass through the Crystal Prism and the Mobius Tower in order to reach the final crypt. The adventure is organized into seven parts, taking the party from the desert through a number of planes on their way to the Citadel of Martek. They must use the Star Gems to revive the dead wizard. When they have done so, he lets them choose from a variety of magical treasure, and leaves to defeat the Efreet.