Getting this question a lot. Tiebreaker games don’t exist in purgatory - they are part of the MLB regular season. As such, all the tiebreaker games (and I know the scenarios are pretty wild right now) will count in all ottoneu games.
Just got an email about this, so bumping in case it comes up again this season - tiebreaker games extend the regular season, so they will count towards standings and extend the last day of auctions, waiver claims, etc. I don’t think this will affect auctions, since it’ll be too late to start an auction by the time we’ll know if there’s a tiebreaker game, but it will actually affect waiver pickups.