There is actually nothing further you need do beyond installing the Opera GX browser and GameMaker - GameMaker already includes all the tools it needs. Note that you may get a Firewall warning the first time you run the target as GameMaker uses a micro web server (see here for more information) to serve the game to the browser and this will require access to your network. Once you have selected this target, you can run your game from the IDE as you would for any other target or for testing and it will open your installed Opera GX browser and run the game. To target Opera GX from the IDE, use the Target Manager, which is located in the top-right of the GameMaker window: Note also that Opera GX is a high-performance, compiled package with in-game functionality and behaviours more similar to Windows, macOS, etc., than it is to the HTML5 target. It's also important that you keep the browser version up-to-date, as GameMaker and the browser may rely on something the other one has just introduced in a new version.

You can test your games later on using other browsers, but you will need GX to be installed and this will be the default browser used. Note that before following this guide you will need to have installed the Opera GX browser itself and run it at least once to set it up however you would like.

Requires Opera GX (The Browser) Installed On Your Machine > How to Publish a Mobile Game to GX.games There are two other guides for what comes after you have made your game package: All GameMaker licence types (including free) come with an export platform for Opera GX, which is a free online game-hosting and sharing community where other people from all around the world can easily play your games. This guide covers setting up the Opera GX target and making your game packages.

Operagxsetup