Ben 10: Battle Ready was a fun Flash game back in the day, until Flash stopped being supported and it was taken off the website. It was one of, if not the only Ben 10 game back in the day that allowed transforming into all 10 aliens where each has its own set of abilities. On top of that, it was the first Ben 10 game on the Cartoon Network website. It deserves to be preserved.

https://ben10.fandom.com/wiki/Battle_Ready