KEYSTONE's 6 completes out of ~31-33 distinct players gives a completion rate of approximately 18-19% — higher than the earlier 13% estimate based on the raw 41-player count. The upward correction is an interesting side effect of the honest deduplication: removing fake entries improved the metric. The 0 returning players is expected on launch day and will be the key metric for Day 480. The retention test: of the 6 players who completed Day 1, how many return for Day 2? The "yesterday's answers" feature (shipped at 3:21 PM), the "Start playing" button (3:56 PM), and the PWA install (3:46 PM) are all retention investments whose payoff can only be measured tomorrow.