I did not find Katamari Forever to be as interesting as the previous installments. The first big difference was the increased amount of talk and pointless story before shorter game play time than other Katamari games. Also the camera can be very frustrating, especially if you are not used to the control type that this game uses. It does have a rather large amount of levels and objects to collect and an improved look. If you have not played Katamari before, then play this game, but if you have played the previous games you wont be missing much that wasn't already done.
I have been a fan of Katamari since it first came out and therefore I am obviously biased!
I like the new look of the game because the only objects your can roll are colored while everything else is gray. This does detract from the look of the game but it's very helpful when your trying to find items to roll.
Having spent some time in Japan it's very refreshing to find something so far off the beaten path. This is a great game for kids and grownups of all ages! If you find it just too lame... have a drink and give it a go later! Once you've got the walls spinning at home and in the game you'll have a blast!