What is the most popular PC game of all time?

What is the most popular PC game of all time based on direct subscriptions? (Lineage, Starcraft, WoW, Runescape, Minecraft)?

What game has the highest net profit? (League of Legends? Call of Duty?)

What game has the most unique amount of concurrent users (1 account per person)? (Lineage, Minecraft, Runescape)?

---

I know WoW has the highest gross profit, but they have lots of staff, servers, etc. CoD has no staff and no servers.

I know Minecraft has the most sales, followed by WoW, but that doesn't answer my questions above.

I don't know the answer to your question but CoD is created by three different studios and mostly certainly has does have staff and servers… And minecraft isn't subscription based.