Player rankings based on long term opponent activity

1. A method comprising:

detecting, by a server, a first interaction event, within a multiplayer video game being executed by the server, between an active player and a qualifying player from respective user devices;

determining, by the server, a retention value for the qualifying player, the retention value based on the qualifying player returning to the multiplayer video game that is executed by the server, after the interaction event;

rating, by the server, the active player based at least on the retention value of the qualifying player.

2. The method of claim 1 , wherein the first interaction event corresponds to the active player and the qualifying player participating in the same instance of a multiplayer video game.

3. The method of claim 1 , wherein the first interaction event corresponds to communication between the active player and the qualifying player, within a multiplayer video game.

4. The method of claim 1 , wherein the first interaction event corresponds to the active player and the qualifying player participating as members of the same team within a multiplayer video game.

5. The method of claim 1 , wherein the first interaction event corresponds to the active player and the qualifying player participating as members of different teams within a multi-player video game.

6. The method of claim 1 , wherein the retention value is further based on the qualifying player returning to the multiplayer video game within a threshold time period.

7. The method of claim 6 , wherein the threshold time period is one selected from the group consisting of: a minute, an hour, a day, a week, a month, and a year.

8. The method of claim 1 , wherein the retention value for the qualifying player is weighted higher if the qualifying player returned to the multiplayer video game sooner than later.

9. The method of claim 1 , wherein the retention value is further based on the number of times the qualifying player returns to the multiplayer video game within a threshold time period.

10. The method of claim 1 , wherein the retention value is further based on the duration for which the qualifying player returns to the multiplayer video game.

11. The method of claim 1 , wherein the rating is based on the retention value of multiple players.

12. The method of claim 1 , wherein the active player is one selected from: a human player and a bot player.

13. The method of claim 1 , further comprising;

ranking, by the server, the active player based on the rating.

14. The method of claim 1 , further comprising:

detecting, by the server, a second interaction event between the active player and the qualifying player;

weighing, by the server, the retention value for the qualifying player higher based on detecting the second interaction event; and

rating, by the server, the active player based at least on the higher weighted retention value of the qualifying player.

15. The method of claim 1 , further comprising:

determining, by the server, that the qualifying player is a new player based on a new player threshold;

weighing, by the server, the retention value for the qualifying player higher based on determining that the qualifying is a new player; and

rating, by the server, the active player based at least on the higher weighted retention value of the qualifying player.

16. The method of claim 15 , wherein the new player threshold is one selected from the group consisting of: a number of hours, a number of days, a number of weeks, a number of months, a number of plays, and a duration of play.

17. The method of claim 1 , further comprising;

matching, by the server, an unmatched player with the active player based on the rating.

18. The method of claim 1 , wherein the active player is more favorably rated for a higher retention value than for a lower retention value.

19. The method of claim 1 , further comprising:

determining, by the server, that the active player's rating is below a threshold; and

designating, by the server, the active player as an observed player based on the determination.

20. A system comprising:

a processor of a server configured to:

detect a first interaction event, within a multiplayer video game executed by the server, between an active player and a qualifying player from respective user devices;

determine a retention value for the qualifying player, the retention value based on the qualifying player returning to the multiplayer video game, after the interaction event;

rate the active player based at least on the retention value of the qualifying player.

21. The system of claim 20 , wherein the first interaction event corresponds to the active player and the qualifying player participating in the same instance of a multiplayer video game.

22. The system of claim 20 , wherein the first interaction event corresponds to communication between the active player and the qualifying player, within a multiplayer video game.

23. The system of claim 20 , wherein the first interaction event corresponds to the active player and the qualifying player participating as members of the same team within a multiplayer video game.

24. The system of claim 20 , wherein the first interaction event corresponds to the active player and the qualifying player participating as members of different teams within a multi-player video game.

25. The system of claim 20 , wherein the retention value is further based on the qualifying player returning to the multiplayer video game within a threshold time period.

26. The system of claim 25 , wherein the threshold time period is one selected from the group consisting of: a minute, an hour, a day, a week, a month, and a year.

27. The system of claim 20 , wherein the retention value for the qualifying player is weighted higher if the qualifying player returned to the multiplayer video game sooner than later.

28. The system of claim 20 , wherein the retention value is further based on the number of times the qualifying player returns to the multiplayer video game within a threshold time period.

29. The system of claim 20 , wherein the retention value is further based on the duration for which the qualifying player returns to the multiplayer video game.

30. The system of claim 20 , wherein the rating is based on the retention value of multiple players.

31. The system of claim 20 , wherein the active player is one selected from: a human player and a bot player.

32. The system of claim 20 , wherein the processor of the server ranks the active player based on the rating.

33. The system of claim 20 , wherein the processor of the server is further configured to:

detect a second interaction event between the active player and the qualifying player;

weigh the retention value for the qualifying player higher based on detecting the second interaction event; and

rate the active player based at least on the higher weighted retention value of the qualifying player.

34. The system of claim 20 , wherein the processor of the server is further configured to:

determine that the qualifying player is a new player based on a new player threshold;

weigh the retention value for the qualifying player higher based on determining that the qualifying is a new player; and

rate the active player based at least on the higher weighted retention value of the qualifying player.

35. The system of claim 34 , wherein the new player threshold is one selected from the group consisting of: a number of hours, a number of days, a number of weeks, a number of months, a number of plays, and a duration of play.

36. The system of claim 20 , wherein the processor of the server is further configured to match an unmatched player with the active player based on the rating.

37. The system of claim 20 , wherein the active player is more favorably rated for a higher retention value than for a lower retention value.

38. The system of claim 20 , wherein the processor of the server is further configured to:

determine that the active player's rating is below a threshold; and

designate the active player as an observed player based on the determination.