Ginger: Beyond the Crystal

Bonus Areas are entered by jumping into the Red Crystals that you will be introduced to after beating the first level. These are short but challenging platforming sections that are very reminiscent of the secret challenges in Super Mario 64 or Super Mario Sunshine.

You need to touch all the red crystals to complete the stage, and it would be quite hard to miss them as you're progressing. Sadly there are times when you will fall through the floor of some moving platforms, but luckily you are teleported back to the start of the challenge rather than kicked out to the hub.