Unity Shuts Down ironSource Ad Network, Bets on AI Platform Vector

Three and a half years after a controversial acquisition reshaped mobile gaming's ad ecosystem, Unity Technologies has decided ironSource's ad network isn't worth keeping. The network goes dark on April 30, 2026, and Supersonic, Unity's casual publishing label behind Bridge Race and Going Balls, is being shopped to buyers with financial advisers already engaged.

Both moves came out of Unity's March 2026 investor update and signal something more fundamental than routine portfolio cleanup. The company is reallocating capital and talent toward Unity Vector, an AI-driven ad and user-acquisition platform launched in 2025. Vector posted mid-teen sequential revenue increases and now represents a significant share of Unity's Grow Solutions revenue, making it the clearest growth engine the company has in its ads business.

ironSource, by contrast, had been in visible decline since Unity closed the 2022 merger. The network's associated units shed key leadership, and the integration never produced the mobile monetization dominance Unity projected. Retiring it rather than attempting another revival reflects the changing economics of mobile ads: machine learning and AI-centric attribution tools are outcompeting legacy ad stack infrastructure on margins, targeting precision, and scalability.

For mobile developers and UA managers, the April 30 cutoff is the immediate pressure point. Campaigns running through ironSource's mediation layer need migration plans, and teams will be watching for Unity's guidance on data portability and recommended alternative providers. Advertising partners evaluating Vector will need to assess whether its AI capabilities can match or surpass what ironSource delivered at scale.

Unity's broader financial picture softened the disruption somewhat. The Create division, which houses the Unity engine itself, continued posting year-over-year growth, and the company expects ironSource to contribute minimally to results even before the April shutdown. Divesting Supersonic fits the same logic: a publishing label competing in the crowded casual mobile market is harder to justify when Vector's infrastructure play is what the company's growth story is built around.

The 2022 ironSource deal was contentious in the developer community from the start, tied up in debates about mediation practices and later overshadowed by Unity's runtime fee controversy. Closing the ironSource chapter doesn't erase that history, but it does clarify where Unity sees its future: not in running an ad network, but in selling the AI layer that operates above whatever networks remain.