Champions Of Aerial
Champions of Aerial is a battle arena fighting game with up to four players where the goal is to under a series of rounds, push the other players of the platform and be the only one remaining, to be the Champion. In between the matches you have the chance to upgrade your character with new attacks to create even more mayhem on the battlefield.
  • Robin Cederlund

    Robin Cederlund

    CEO, CEO
Just add multiplayer

While working on Champions of Aerial, I took on the task of researching if it would be possible to add online multiplayer to the game. Online multiplayer is not something that we had planned to do when we started this whole project, but it’s a feature that playtesters have requested we should add. No one have specifically said “You must include online multiplayer” and of course we don’t absolutely have to add it, but I will admit that it would have been a sweet addition to the game.

I find it interesting whenever someone use the word “just” when they talk about this feature. When someone makes the suggestion “Just add multiplayer to your game” or in the form of a question “Why don’t you just add multiplayer to your game?” the word “just” not only implies that the suggestion is a really obvious thing we should already have thought of, but also that the suggestion is a really easy thing to do. Actually, it turns out that adding online multiplayer to a game is not as easy as people might think.

Normally a server-to-client communication can handle around 9 updates every second, which would mean that games played online would be very choppy.


But 9 is a lot less than 30 and the games we play online doesn’t look choppy, how is this achieved? Well, let me tell you. 

When the client on your computer sends off a package of new inputs to the server, the client performs a bunch of calculations and tries to predict how the update will look like. So before the client gets a response from the server, your game can perform an update based on your clients prediction. Once the client receives the actual update from the server, it simply implement the corrections. This makes your game able to perform 30 to 60 updates every second and in turn look a lot smoother, even though your client in reality only receives around 9 updates every second. The better predictions your client can calculate, the less corrections are needed when the update from the server are received. But if you have built a poor client, those predictions will cause your updates to jump players around all over the place.

Anything below 30 make the game look and feel choppy. Now imagine having clients that have to send packages of new inputs to a server,which takess those inputs and updates the game, which then sends back new packages consisting of the updated game to the clients so the client on your computer can finally update your game.


Now is a good time to point out that the server and the client could exist in different parts of the planet.

All of the server-to-client communication can of course only occur if the server and the clients know where to send the packages. The clients need to know where the server exist, and the server need to know where the clients exist. In most online games where a Hosting multiplayer exist, a sort of lobby room takes care of establishing these connections. You as a player creates a room where other players can join your game (your server), and you can find other rooms from your game to join. But this lobby room actually exist on another server, a Dedicated server that the game in advance have been built to know how to connect to. So if you don’t want to pay for this lobby room to exist on a Dedicated server where players can easily establish these connections with each other, you would have to create some other way for the server and the clients to find one another, or have the player type in the IP-addresses of other players manually.

So unfortunately Champions of Aerial will not have a built-in online multiplayer, and whenever someone asks “Why don’t you just add online multiplayer to your game?” I can now explain why that would be a difficult thing for us to do.


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