There is an insane amount of content here - almost a little too much for a jam experience, where people look through hundreds of games. Perhaps shortening the cycle to just "worm>frog>bird" and focussing more on the mechanics of each one would improve the overall experience by making a playthrough feel a bit more rounded - pun intended. What's here looks solid, if a little bare bones.
I do enjoy the visuals and the fact there is variety in styles. Especially the worm level looks sleek with the tunnels cutting through the level.