Expansions
How often each expansion is included in community-logged games, and the overall effect on team win rate. The meta map below shows every unique expansion combination by similarity (PCA), sized by game count and colored by win rate.
How the community plays
Team size: how the community plays
Distribution of team sizes across all community-logged games.
Team size: win rate
Community win rate by team size. The Ancient-Ones page breaks this down per-AO in a heatmap.
The community, through time
Community win rate over time
Rolling 12-month average. Vertical dashed lines mark expansion releases — the same events that re-shuffle the bump charts below.
Expansion frequency vs. impact
Each dot is an expansion. X = win-rate impact (right = teams win more with it). Y = share of community games using it (top = ubiquitous). Size = total games played. Top-right corner = a popular AND positive expansion; top-left = a popular but neutral / negative one.
Expansion-combination map
Every unique combo of expansions, projected to 2D by PCA. Size = games. Color = win rate.
How investigator rankings shift across expansions
Each line is an investigator. The y-axis is their rank (1 = best) in each expansion era. Crossing lines mean the meta shifted. Hover a line to isolate it; gaps appear where an investigator didn't reach the minimum game count in that era.
How Ancient One difficulty shifts across expansions
Same bump chart, this time for Ancient Ones. Rank 1 is the AO the community beat most often in that era (Bayesian-shrunk). Watch for AOs that crash up or down the leaderboard as expansions reshape the meta.
Optional rules
The Optional Rules Lab
Does flipping a rules toggle actually change anything? For each option flag, the bar shows the difference in win rate between games using it and games not using it, with 95% bootstrap CIs. Bars that cross zero mean we can't tell from the data.
The `Prelude` option flag indicates use of optional Prelude rules; it is independent of the named prelude column.
Effect of Mythos modification
Win rate by the chosen Mythos modification setting. n = games.
All expansions
Sorted by frequency.
| Expansion | Games | Share | Win % with | Δ |
|---|---|---|---|---|
| Forsaken Lore | 16,829 | 79.6% | 61.5% | 7.1% |
| Mountains of Madness | 12,506 | 59.2% | 65.1% | 12.3% |
| Strange Remnants | 11,936 | 56.5% | 65.6% | 12.7% |
| Under the Pyramids | 10,203 | 48.3% | 66.8% | 13.2% |
| Signs of Carcosa | 9,434 | 44.6% | 67.3% | 13.0% |
| The Dreamlands | 7,820 | 37.0% | 68.9% | 14.1% |
| Cities in Ruin | 7,555 | 35.8% | 69.1% | 14.1% |
| Masks of Nyarlathotep | 6,020 | 28.5% | 71.1% | 15.5% |