Are references to drugs (or drugs being a central component of the game, like a game similar to Schedule I) counted as 'offensive visuals' under the no-NSFW rule?
No. Drug references or drug based gameplay do not count as offensive visuals, as long as you are not giving real world instructions for making or using drugs. It is recommended to note on your project page that the game includes drug themes so players can decide for themselves whether they want to play it.
