Alliance is a weekly, season‑based PvPvE system where guilds join one of three factions and compete for ranks and rewards through various PvE activities, PvP, and a large weekly war called “Conflict.” To participate, a character must be in a guild that has joined an Alliance and then enroll in one of the three factions (Free Traders Collective (FTC), Enlightened Union (EU), Iron Order(IO)).

OSTO has made a few changes to Alliance in order to incentivize participation as well as attempt to create a more balanced playing field. These changes include:
There are three alliances and each controls a capital city and a surrounding territory.

| Alliance | Location | Focus | Buffs* |
|---|---|---|---|
| Iron Order (IO) | Kaiator | Military Power and Resilience | |
| Enlightened Union (EU) | Allemantheia | Research and Reputation | |
| Free Traders Collective (FTC) | Velika | Trade and Economy |
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*Each Alliance is granted a passive bonus, however, OSTO has removed these buffs to encourage an even spread among alliances.
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