Umamusume: Pretty Derby saw a sudden spike in negative reviews. 24 additional reviews were posted during the tracked window.

This was an extreme incident with maximum review pressure.

It ended after 12 m. The review score is still settling.

How much did the review score change?

The score moved by 0.0 points, from 94.0% to 94.0%. At its busiest, the game received 429 reviews per hour.

Were other games affected too?

No related incidents were detected for other games in the same time period.

Back to game Back to alerts Compare this incident Leaderboards Reports

!!Negative NUCLEAR

Incident #232

Umamusume: Pretty Derby

The most recent tracked incident was a negative nuclear alert triggered by sustained conditions. Across the visible window, the game added 24 reviews, the current 1-hour directional delta sits at 0, and the incident peak reached 458 in 1 hour. 1 earlier incident have already resolved.

Patch Backlash

Before score

94.0%

Current score

93.0%

Change -1.1%

Review velocity

458 reviews

May 5, 2026, 8:56 PM - May 5, 2026, 10:00 PM

Cause confidence

Patch Backlash (64% confidence)

Quick summary

What happened?

How bad was it?

Peak tier: NUCLEAR. Review velocity spiked to 458 reviews. Score moved -1.1%. Resolved in 0 hours.

What triggered it?

Likely causes: Patch Backlash. Trigger type: sustained. See the timeline tab for event-level detail and patch notes.

Where to go next?

Game page Leaderboards Reports Topics

Opened: May 5, 2026, 10:01 PM

Resolved: May 5, 2026, 10:13 PM

Peak severity: nuclear

Score change: -1.1%

Trigger: sustained