Two things which seem concerning with this: the "per install" (as opposed to some percentage of revenue) rubs the wrong way; and that this applies retroactively

Two things which seem concerning with this: the "per install" (as opposed to some percentage of revenue) rubs the wrong way; and that this applies retroactively to games built on Unity even before this was announced. This post doesn't clarify what happens if someone deletes the game (to save disk space), then installs it again, despite this being the most basic question. They've since clarified that re-installs count, then re-clarified that re-installs don't count. -- I've seen it clarified that pirated copies of the game count towards this installation count. (Which discourages devs from releasing the game DRM-free). Another incentive is for devs to then focus on in app purchases, since IAPs aren't subject to this Unity fee. It reminds me of Darth Vader's line: "I have altered the deal. Pray I don't alter it further."