Direct answer
PlayOJO has an official brand family and a wider operator family
PlayOJO sister sites need a careful definition because two different relationships are often mixed together. The first is the official PlayOJO and PlayUZU brand family. PlayOJO itself presents this as the trusted family of regional PlayOJO sites and PlayUZU sites that share the same fairness-led positioning, local market approach and no-wagering identity. This is the closest answer when a player asks for the official PlayOJO sister sites.
The second relationship is the wider SkillOnNet operator and platform record. Skill On Net Limited appears on the Gambling Commission public register with PlayOJO domains and many other casino domains. Some of those casinos are active operator brands, while others are listed as white-label domains. They can be useful comparisons because they may share technology, casino operations or licensing context. They are not all the same thing as an official PlayOJO sister brand.
This page keeps those categories separate. PlayUZU and local PlayOJO versions are treated as the brand-family answer. SlotsMagic, SpinGenie, Mega Casino, PlayMillion, Queen Vegas, Lucky Niki, Slingo, Genting Casino and other SkillOnNet-connected domains are discussed as wider operator comparisons where the current record supports that context. The distinction matters for bonuses, account history, support expectations and the way a player should read terms before joining.
Source: the UK Gambling Commission’s Skill On Net domain record distinguishes active and white-label domains. A shared licence record does not establish identical brand ownership or account terms.
PlayOJO also publishes its own official OJO and UZU sister-brand list, which is narrower than the full SkillOnNet domain record.