Impact Games are games that can move a team up or down the RPI Ladder (increase or decrease RPI Rank).
Direct Impact Games are head-to-head matchups for the team.
Indirect Impact Games are games that include a previous opponent of the team and impact the team's SOS component of RPI.
Late in the season, Indirect Impact Games may only have a small impact on a team's RPI Rank.
Normally, a win will increase a team's RPI Rank and a loss will decrease it, but sometimes when playing a really strong opponent a win or a loss will increase RPI Rank and when playing a much weaker opponent a win or a loss will decrease RPI Rank.
RPI Points are approximate.

RPI Ladder
RPI
Team
RPI Pts
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