Dune: Imperium
Microtransactions in Dune: Imperium are summarized as...
The game is based on a board game and the game follows a similar release structure. The board game currently has 2 expansion packs available, with more to come. The game itself contains one of these expansions. It is not yet clear of others are to follow, but one might assume so.
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Contains no microtransactions, but does contain some smaller scale DLC that provide extra content.