I have never played the games but I did find the show (the season that aired on Kids WB anyway) enjoyable. They were fun characters and the action was pretty good.
I never played the games either. I discovered the Viewtiful Joe Anime as part of an Anime Block that Jetix aired from 20:00 PM to 22:00 PM, which also included Bobobo-Bo-Bo-Bobo. It was the last one to air in the block, and I always thought it was the best of the bunch. I never knew it came from a Video Game Series until I watched through your show.
This series doesn't look very interesting to me but I think I watched like a few episodes of this series on Kids WB back in the day.
It wasn't that great from what I remember.
It was because it wasn't (and still isn't) my cup of tea. And this is coming from a fan of Kamen Rider.