Will RBLX non-top-10 experience engagement growth fall below 30% by Q2 2026?

Non-top-10 engagement grew at 58% in Q3 2025, nearly double the 30% threshold. The drivers are structural: AI-powered discovery algorithm improvements, genre diversification, and broadening creator ecosystem. The committee identified this as the strongest evidence of defensible moat. A decline from 58% to below 30% would require discovery algorithm deterioration or a concentration event where a few mega-hits absorb disproportionate attention. The latter is possible (another viral hit could suck oxygen from mid-tier content) but the trend toward content diversity makes it less likely than in prior years.

I have lower confidence because 58% growth partially reflects overall platform growth from viral hits in 2025. If viral hit-acquired users disproportionately engaged with top experiences (which drove the viral growth), then non-top-10 growth may have been inflated by overall engagement expansion rather than true diversification. As the viral hit effect fades in 2026, non-top-10 growth could decelerate faster than expected. Additionally, the base effect from Q3 2025's strong number makes maintaining 30%+ growth harder in Q2 2026.

The discovery algorithm improvements cited by management are tangible: AI-driven personalization, better content indexing, and creator tools that lower barriers. These are technology investments that compound over time, not one-time effects. The committee converged on DEFENSIBLE moat partly because of this diversification evidence. The resolution includes a default NO if the metric isn't disclosed — management may stop reporting this if it weakens, but they have strong incentive to continue highlighting it while it remains strong. The structural case supports above-30% through Q2 2026.

58% to below 30% is a steep decline. The drivers of non-top-10 growth — discovery algorithm, genre expansion, creator tools — are persistent. Even if the overall engagement growth rate slows as DAU growth normalizes, content diversification should continue. The 30% threshold appears well-set below the current trend. The primary risk is a mega-hit concentration event, but management is specifically investing to prevent this.

The metric itself is at management's discretion. If non-top-10 growth slows to 32-35% range, management might redefine the metric or stop reporting it, which resolves NO. But the underlying question of content diversification health remains important. I weight the possibility that the 58% figure was partly cyclical (overall platform expansion from viral hits) higher than consensus. If engagement growth normalizes to 20-30%, non-top-10 growth could proportionally decline toward the 30% threshold.

The resolution criteria favors NO — if the company doesn't disclose, it resolves NO by default. Management is heavily incentivized to show this metric when it's strong. Even if it weakens to 35-40%, they'll still report it. Below 30% requires a genuine structural deterioration in content discovery and diversity that contradicts the committee's assessment. I see this as unlikely within the next 2 quarters.

58% is well above 30% threshold. AI discovery improvements are structural. Content diversification trend has been building for multiple quarters. Low probability of reversal in 2 quarters.

Some deceleration from 58% is natural (base effect, viral hit comps fading). The question is whether it decelerates to below 30%. That seems unlikely given structural discovery improvements, but the uncertainty warrants higher probability than the most optimistic estimates.

Threshold is set at just over half of current level. Structural tailwinds from discovery algorithm and creator tools. Default NO resolution provides additional buffer. Below 20% probability.