I'm not sure I'll be available at the "official" starting hour, so I'll give the theme words now. As it's stated on the jam page, you may use one or several of them (or none) as a starting point.

Here they are :
Growth
Bounce
Fly

How lucky! Didn't know the words but my game kind of have the two of them already!

Hehe, two?! That's lucky indeed :D

Good luck everyone, have fun!