Wanted to write something organized and well thought out but this game just makes me feel good, it's just so charming and full of surprises.

The rainbow is such a genius idea, lets the player experiment and be creative in how they approach the levels (which can be quite challenging too), it can be used as a shield, a platform, a step (or stairs!), a projectile, a melee attack, you can get items and points with it, and even trap enemies or stop them from getting close.

Collecting all the diamonds to get to the final levels and the true ending is quite a hustle, and I think makes the game worse by taking the focus away from the platforming until you get all the diamonds in a specific world.

But even then I feel like it might be one of my new favourite games.