Whenever a game is refused classification in Australia, it’s usually due to two things. The first is around the depiction of sexual content, typically involving sexual violence or the depiction of minors in sexual scenes, acts, and so forth. That’s how a lot of anime-style games, like Omega Laybrinth Z, get slapped with an RC.
The other, and more common, reason for a ban: drugs. “Computer games will be refused classification if they include or contain ‘drug use related to incentives and rewards,'” the Classification Board’s report for We Happy Few said.
Source: N4G PC Cyberpunk 2077 Might Have Troubles Getting Rated In Australia