when does the corruption spread in cos roblox

I’m not sure which game you mean by “COS Roblox,” and the search results I found point to unrelated corruption mechanics in other games, not a clear Roblox COS answer.

What I need

• The full game name for “COS.”
• Or a screenshot / exact event name where “corruption” appears.

Why it’s unclear

“Corruption” can mean different systems in different games, and the result set I found did not confirm a Roblox COS mechanic or its timing.

Fastest way to narrow it down

• Tell me the Roblox game’s exact title.
• Or paste the in-game description of “corruption.”
• Or share the quest/NPC name connected to it.

SORRY, FAILED