Deuterium is one of the three resources in pr0game and is produced in the Deuterium Synthesizer.
Deuterium is required for all ships as fuel and for building of some buildings, research and ships. Deuterium ( 10 per every system)is used when browsing systems in galaxy view.
Deuterium can be refined by the Deuterium Synthesizer, and unlike in case of other resources there is no basic deuterium production.
Deuterium can accumulate when investing in mines, and deplete quickly when flying large fleets hence it is often traded between players of different playstyles. It is usually traded as follows:
Metal:Crystal:Deuterium = 3:1:1 or 3:0.5:1. Rates in between these values are also common.