Mania Farm uses a research signal informed by sampled player top plays, accuracy, performance, map structure, and exposure-adjusted adoption. It aims to recognize efficient charts while accounting for evidence quality.

.farm selects the highest-index eligible fresh charts first in the checked implementation. Strong strict matches precede the more permissive fallback. A chart still needs to satisfy the room's hard filters and key mode.

Farm availability depends on staff enablement and validated data. The 4K and 7K research models have different coverage; their raw index values are not interchangeable. The farm index is an experimental ranking signal, not a guaranteed amount of PP for your score.

Variety can use bounded farm-aware weighting while retaining all eligible structural styles. Missing evidence is not an automatic exclusion from Variety. See selection rules and release history.