Chroma is a game devoid of power-ups or upgrades. You start the game with a single power, and you keep it the whole way through. There is also only one massive level, with near-full access from the beginning, and despite being a side-scroller, the game is mostly non-linear.
As the dev describes it on the Chroma website, “it’s a brain explosion inducing thing to design.”
The gameplay in Chroma will focus on the player’s ability to play between light and shadow. And to keep things interesting, the dev says he’s making sure “there’s a chance a player can encounter something new that seems very difficult or advanced or obtuse as they haven’t been introduced to it before.”