- Hollow Earth Expedition (available in French and German)
- Game Master Screen
- Secrets of the Surface World
- Mysteries of the Hollow Earth
- Miracle Stone of the Amazon and Frozen City of Terror, both from the Perils of the Surface World series of pdf adventure modules
- Ubiquity Dice
- Ubiquity Style Chips for each of the three sourcebooks
- Quick Start Rules and adventures for Free RPG Day 2008-2010
Exile Games created the game system for the system which uses a binary dice pool method. Special dice were produced and are available, but not necessary to play the game.
Danger Magnet is an online fanzine resource for HEX.
Later this year an additional supplement is to be released taking the game in a whole new direction- Revelations of Mars.
The following are reviews from the YouTube series, Game Geeks...