One thing that's been missing from every 3D platform game so far is the "just one more go" feeling that you'd get with many old Mega Drive and SNES games. Jumping Flash 2, like the first game, makes you play the game obsessively because the desire to see the next level and finish the game is so great.
Unfortunately, this is also the game's main problem - playing Jumping Flash 2 obsessively will mean that the game's completed on all modes in a day. The levels are fantastic and the 3D graphics have a slightly more realistic look than before, giving an excellent sense of being there.
The best thing about this Japanese import version is that the original Jumping Flash is included in the pack, although it's the American version with annoying re-mixed sound effects. For import PlayStation owners, it's one of the best things available, and is even better if you haven't got the original. Let's just hope the first game's included in the official pack...