How to run web Flash game on browser in 2025?
Missing the golden age of Flash games like MMORPG Crystal Saga, Bloons Tower Defense, Fancy Pants Adventure, or Stick RPG?
Good news — it’s still possible to play them today, even though most modern browsers no longer support Flash.
In this guide, I’ll show you exactly how to run Flash games safely and easily in 2025 using Pale Moon and Flash Player 32.0.0.371.
Why Flash Games Stopped Working
Adobe officially ended support for Flash Player back in December 2020, and major browsers like Chrome, Edge, and Firefox soon removed all Flash functionality.
As a result, when you open an old Flash game, you’ll usually see nothing — or get an error message like “Adobe Flash is no longer supported.”
But there’s a workaround: use Palemoon browser, it still supports NPAPI-based Flash plugins.
Here’s what you need to make Flash games run again:
Download Pale Moon
Download Flash Player
1.) Choose your OS version for Palemoon browser. I'm using Windows as an example.
2.) Download the specific Flash Player as mentioned. After installing, please block it from auto-update, else you will get it uninstalled.
3.) Make sure the flash plugin is activated in Palemoon browser.
4.) Now go to any flash based website/browser-based flash MMORPG, you will be able to see it running fine. Then, you're good to go now!
Important steps!
BLOCK THE FLASH PLAYER FROM UPDATING!!
On keyboard, press "Win key + R key", enter "taskschd.msc" (no "") .
In the "Task Scheduler Library, right click on both "Adobe Flash Player NPAPI Notifier & Adobe Flash Player Updater" and DISABLE them.
On keyboard, press "Win key + R key" again, enter "services.msc" this time.
In the services, double click "Flash Player Update Service", set the "Startup type" to Disabled and stop the service immediately.
✨Congratulations! You now have fully working Flash player and can play any flash games you like in your Pale Moon browser!