Why does the game work on some devices but not others?

It could be anything. First things first, is it browser-related? Some browsers are better at handling games than others. Have you tried Chrome or Firefox to see if it’s consistent? It could be a problem with the hardware of the device itself. Perhaps an old laptop cannot cope with resource-hungry games. Or it’s the GPU drivers, or maybe even the OS update. It might not be designed to run as a mobile app. And maybe you’re using Flash or WebGL which may not work on all platforms. I’d test across a range of devices to see if the problem remains. If that’s too time consuming, advise users to update their browser (or use a different browser). Start narrowing it down, it’s probably a question of either performance or compatibility. Let me know how it goes.

Browser problems can’t be ruled out - each browser has its own way of handling scripts / web sockets / websites, etc. You might want to try it with different browsers (Chrome, Firefox, Edge, Safari....) and also consider old browsers and/or operating systems. Device capability is a factor that you may want to rule out - cheap devices will crash if they have to run a heavy game like this. Try reproducing it on various devices. If you’re using WebGL or HTML5, older graphics cards won’t work. Ask your users the OS/browser info - that’s where I’d start.

browser bugs – check whether your players are using old or non-supported browsers (like IE). hardware issues – cheap devices won’t run graphically intensive or memory hungry games. Ensure your players have sufficient RAM and a good enough graphic card. WebGL support – this can sometimes cause problems in flash games. Try different devices and browsers.

I presume this has something to do with different browsers, lack of updates, and perhaps some other hardware issue. The game may be using WebGL or HTML5, which some browsers don’t allow. It may work fine on Firefox but crash in Chrome. Have people updated their browsers? Cleared the cache? Does it work in private/incognito mode? It might be CPU intensive and so some older systems might have a problem running it. Best to test across the main operating system/browser combinations. Hope that helps!

Oh, browser incompatibility, I know you so well. Do you have a recent version that runs on Chrome, Firefox, Edge, and Safari? Does it use WebGL? Hardware acceleration? Older computers may not handle this. Have they tried rebooting, clearing the cache, and opening in incognito mode? Update me when you investigate further!