We used this to find games that use currently unimplemented or stubbed features. We have a 'game quirks' mechanism where the emulator reports weird edge cases that happen very rarely. No bug report was filed until we found out via analytics and asked. It turns out we had a regression in a niche feature which was very important to a sub-community of our users, and users were basically telling each other to just use that old version. We found out by looking at the distribution of software version that we had a strong holdout on one specific revision. I remember several times we discovered things we would likely have completely missed otherwise: We introduced some opt-in telemetry in several years ago.
