Valve makes clear companies can still advertise in games. Those awkward billboards and real-world brand cosmetics are still fine to include, although Steam does stipulate that these must not be “disruptive” and that they be “appropriate within the context of the game.”

Valve removed a game from its Steam video game platform and store because it contained malware, according to media reports. In its notice to users who downloaded the game, Valve said affected users may want to “consider fully reformatting your operating system.”

Valve has seemingly introduced new rules that ban games that require users to watch paid ads (or rely on other such ad-based revenue models) from Steam. However, some sources report that these rules may have already existed, and that Valve has merely created a dedicated page on Steamworks to clarify this policy.