I haven't fooled around with this too much, but check out the Screenshots I have for Malibu Bikini that are new...
I haven't played this game much, so I don't know what is too different compared to the released version. Some of it is different (especially in the attract screens).
As for Road Riot... I am going to spend some extra time with it right now. It appears that I have a version where the stupid vecichle doesn't flip at every single bump (which is awesome) and I think the controls were changed. I'll get more info on that later.
Road riot(different).zip
Malibu-Debug.zip
Road Riot appears to be different (starting on the different part of the screen, roads appear different, etc).
Enjoy the files and load them up in Handy (or your flashcarts...)
(Merry Christmas!---even if it is a tad late)