me and mrs Charlie played quite a bit of the vs. mode.
it's download only - which is a little bit of a pain as it takes an age to down load the code.
the game is played with your opponent in the top screen.
You are both running along an identical 1000m Yoshi level.
For every combo you do greater than 3 (ie: hit more than 3 objects with one shot) , a set of Red Spinies get created at random locations on your opponents screen.
The idea is to kill your opponent (one hit = death) , survive longer (they die without you creating a spiney), or to reach the end of the 1000m section before they do.
It's fun, but it's a little too lightweight - which is my only complaint with the game on the whole, but that maybe down to my initial expectations of what the game was going to be.
I'd have just liked lots of different style stages, a short story mode, something like that to give the game a more rounded feel.
Oh, and an actual Balloon Trip mode, which is how i thought this game started out
