1. A method comprising: aggregating data representing a plurality of wagering game outcomes from respective ones of a plurality of wagering game machines; evaluating an aggregate of the data against a criterion for at least one of an event and an award, wherein the award is independent of pay tables for wagering games of the plurality of wagering game machines; determining that the plurality of wagering game outcomes in aggregate satisfy the criterion based on said evaluating the aggregate of the data against the criterion; computing an adjustment to be applied to at least one of the event and the award, wherein the adjustment is based, at least in part, on a difference between a first of the plurality of wagering game outcomes as represented by the data and a second of the plurality of wagering game outcomes as represented by the data; and indicating at least one of the award and the event for a first of the plurality of wagering game machines that corresponds to the first of the plurality of wagering game outcomes and at least one of an adjusted wagering game outcome and an adjusted event for the second of the plurality of wagering game machines that corresponds to the second of the plurality of wagering game outcomes.