Dilithium is one of the major currencies that can be earned in the MMORPG Star Trek Online. It is given as a reward for playing through Story Missions, Task Force Operations (group PVE content), Duty Officer Assignments and other aspects of the game. Dilithium is initially awarded as ore. The player then has to refine it to be able to spend it. Furthermore, there is a cap of 8,000 Dilithium ore refined per day. Once refined, players can use Dilithium to purchase various items and services ranging from new ships, as well as space and ground equipment. Dilithium is also used in upgrading or re-engineering equipment. Another benefit of Dilithium is that it can be exchanged for Zen, STO’s premium currency. Although Zen is primarily bought with real money, Cryptic provides an in-game exchange service in which players can trade surplus Dilithium for Zen. The exchange rate can fluctuate and has steadily risen over the last ten years. Yet despite this, Dilithium continues to be a tangible and much desired resource.