The multiplayer World Series competition is available to players of Asphalt 8: Airborne. World Series races can be played without limit with any car the player ownes. The goal is to achieve Win Streaks, which will be rewarded with credits, upgrades or nitro starter boosts.
Whenever the player loses, achieves 9 wins in a row, quits a race or is otherwise disconnected for server/ application malfunction, his streak ends. Exiting multiplayer mode after a successfully finished race does not result in losing the streak, however the possible 7-streak (random D-class upgrade/ credits) and 9-streak (random C-class upgrade/ nitro starter boost) rewards may be automatically converted to credit rewards in case of a 7-streak and in a nitro starter boost in case of a 9-streak upon re-entering multiplayer mode. "Winning" does not necessarily mean achieving first place, rather landing a place on the podium – placing first, second or third.
Your opponents will be selected depending on your car's rank, so if you choose to race with a Class A car, you will not race players with a Class D car. However you might face opponents with a low ranking Class S car, or with a high ranking Class B car. An exception can appear if a player spends more than 2 minutes in a room waiting for opponents. More often than not you get matched with cars with a rank up to 50 points above or below your car's (Unless your car's rank is over 1590, in which this restriction does not apply anymore).
At the beginning of the race, you will be able to vote for a Race Mode: Classic, Elimination, or Infected; one of three randomly proposed tracks, and the number of laps (1-3). As of August 8th 2015, when Tenerife was released for multiplayer, all locations are now available for multiplayer. The vote is democratic, however in ties it is unclear which value remains. The process will not wait for everybody to vote, after a certain time, the race starts even if you have not yet voted.
Rating
After the race, you will be presented with the results. The second column is the rating, which persists between multiplayer races and is increased or decreased depending on your result, followed by an indicator if it was increased or decreased, and by how much. Players who get disconnected or leave lose 10 points.
Everyone starts with a rating of 1000 at the first multiplayer race.
The distribution of the rating points after a race is unclear. It can happen that someone with a high rating such as 1300 positions fourth, and loses 6 points, while someone with a medium-high rating such as 1100 positions third and wins 3 points, and someone with a rating of 980 positions sixth and still gains one point.If you face an opponent with a higher rating than you,winning the race will give a bigger rating increasing.
Also it seems the rating has no influence on or relation with any other game element.
Experience
The experience increases with each multiplayer race, depending on how many players you beat. Unlike the rating, you cannot lose experience. Experience is divided in levels, which need increasingly more experience to advance. The first level for instance is 190 XP, where as level 42 is 1840 XP to pass. The higher the level, the higher the rewards you receive after a race.
Reward
The Race Reward you receive immediately after the race depends on your position, your experience level and the number of laps. Unless you have a level of 80+, the reward is fairly low and not interesting as such.
After a consecutive series of wins*, in addition to the race rewards, Win Streak Rewards are attributed. The Win Streak Reward is independent of your multiplayer experience level or your stars level. The Win Streak Reward can be 
Credits, Upgrades or Nitro Starter:
| Number of wins* | 3 | 5 | 7 | 9 |
| Reward | 1,250
|
2,500
|
|
|
*be among the first three
It is not yet clear what the odds are to receive which upgrade. Also there seems an increased chance to obtain a credits reward if you leave multiplayer after 5 wins and re-enter.
World Series vs Farming
If you have unlocked Season 9, it is usually more efficient to buy a double credits boost, farm a track of season 9 and buy the upgrade rather than to get an upgrade via multiplayer. The most expensive Class C Upgrade is currently AC 378 GT Z top speed level 4 to 5, and costs 180,000 credits, which is faster in win streak, however it is uncertain that you will actually manage to win 9 races, and you can get any type of Class C Upgrade. Still, multiplayer is less boring than farming always the same track, and it can be played for just an hour or two without wasting the rest of the double credits boost.
Trivia
- Multiplayer is the only possibilty in the game to race 3 laps.
- If the connection state is bad, then your position can randomly change, and you can continue to race after you have finished the laps. This 'drive' will continue until all drivers (including the last place) finished, and after this your position will most likely be the last place, losing rating and win streaks.
- On some occasions, rank gap of one car to another can exceeds 100 (like racing a Lamborghini Countach 25th Anniversary with a rank of B1415 against a RUF CTR 3 with a rank of S1530). This is more commenly seen in higher-ranked races.
- It is harder to knock down cars in multiplayer mode, even hitting them real hard might not do it. Still, usually approaching from behind with nitro will knock them down.