Couple of questions for you. - You mentioned reinstalling flash, are your browsers also updated? - What OS/browser are you using? - Do you see any ActiveX or other pop-up notices on the top of the page when you load the games? Or any other sort of error message?
- If not can you share a link to the game you are trying to play, or a screen capture of what the browser looks like when it loads the game/page?
As to things you can try and do to fix this,
- Have you tried loading the game in a different browser or use the incognito/private browsing window?
- What happens when you disable your ad-block software?
Give those a shot and let us know if you are still having problems.