From FLEB:
Matching gems and lining up shapes is all well and good, but RYB adds the extra challenge of figuring out the rules as you attempt to solve its puzzles. Knowing that this space needs to be blue and that space needs to be yellow is only the start - you also need to understand why that is if you want to make it through each level.
Think you’ve got what it takes? RYB is available exclusively for iOS right now for $2.99! You can check out the official trailer below.