Hollow Earth Expedition is a pulp fiction role-playing game set in the fictitious Hollow Earth (see Hollow Earth theory), published by Exile Game Studio. The game has been nominated for several Origins and ENnie awards since its release in 2006. The main rule book is Hollow Earth Expedition. System. Hollow Earth Expedition uses the Ubiquity rules, which were also created by Exile Game Studio. The main feature of the system is its use of binary dice pool rolls to determine success. Under the default rules, each even number rolled counts as a success, while odd numbers count as nothing.
https://en.wikipedia.org/wiki/Hollow_Earth_Expedition