World Series

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 choses. The goal is to achieve Win Streaks, which will be rewarded with credits or upgrades. Whenever the player 'loses', achieves 9 wins in a row or exists the multiplayer mode, his streak ends – however it is unclear, when a race is considered  won, and when a race is considered  lost, and if it is related to the Rating.

Your opponents will be selected depending on your car's upgrade level, 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.

Rating
After the race, you will be presented with the results. The second column is the rating, which persist between multiplayer races and seems to be 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 loose 10 points.

It seems everyone starts with a rating of 1000 at the first multiplayer race.

The distribution of the rating points after a race is unclear. However 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.

Rewards
Rewards are attributed after a consecutive serie of wins*, additionally to the credits you earn for your position in the race (maximum 3,520). The reward is independent of your multiplayer experience level or your stars level. * I t is unclear, when a race is considered  won, see section Rating for details.

Comment: If you have unlocked Seson 9, it is more efficient to buy a double credits boost, farm a track of season 9 and to buy the upgrade than to get an upgrade via multiplayer. The most expensive Class C Acceleration Upgrade is for Felino cB7 level 4 to 5, and costs 81,250 credits, which can be farmed in eight to nine Season 9 races, and will take less time.