The “green disc” in Roblox is usually the click-to-move target marker, and it was effectively removed when Roblox phased out or changed that old click-to- walk behavior in the early 2010s. DevForum posts from 2014 already describe it as something that had been removed from the player-facing movement system, while the same green circle could still appear in scripts using MoveTo for NPCs.

What people mean

Most players are talking about the green circle that appeared when you clicked to walk, not a single visible item with one official removal date. In Roblox scripting, a similar green circle could still show up around NPC movement because Humanoid:MoveTo can create that effect.

Best estimate

  • Player click-to-move marker: removed around the early 2010s, and clearly gone by 2014 forum discussions.
  • Scripted NPC movement marker: not fully removed in the same way, since developers were still seeing it in 2020 for NPC-related use cases.

In plain terms

So the safest answer is: the player-facing green disc was removed years ago, before 2014, likely during Roblox’s shift away from the old click-to-walk system. The exact date is not obvious from the available public posts, but the old feature was already considered gone by then.

If you want, I can also explain the difference between the old click-to-walk circle and the green circle that appears in Roblox Studio scripts.