I'm facing with this problem when I try to play HaxBall. I tried all browsers I have (Opera,Firefox,Edge,Chrome). Thanks already now for answers.
Very old games were written when Flash was at version 4 or 5, and nobody could conceive of a version 9, or especially 10. The version checking failed for a lot of people at version 10, because they were misreading that as version 1.
Are there any support options on the page, where you can tell the HaxBall people that their Flash detection has problems?
Most browser's disable Flash by default and force user's to enable it, usually on a per site basis.
Assuming you have Flash Player installed for the various browsers (see below) if the site is coded correctly, if you click on the 'Get Adobe Flash Player' button link the browser will intercept it and display the pop-up window to enable Flash. This is actually what happened when I went to using Chrome:
Had wrong link for Google's support document, updated with the correct link
Thank you so much. I can use flashplayer on all browsers now.
you're welcome. glad everything is working now.