This is really smart! I love a good puzzle game, and this certain is one of them! The mechanics are very complicated, yet the tutorial did a very good job introducing the quirk of the game one by one slowly, so that by the time the true game begins, all players should know what to do. It also comes with a good story supporting the tutorial, too! It's so seldom that a jam game gets this level of polish. This alone deserves all the praise. The puzzles are quite hard too, though it gets easier once the complex colours show up more and more. Generally, this is a really well-done entry!
Other things I like:
- The clever colour stacking mechanics
- Simple graphics that don't distract much from the puzzles
- 12 well-crafted levels
- Great art
- Decent music choice
Suggestions:
- I think the colour mixing table should be visible at all times, reducing trial and errors for people who forget how the colour mixes together
- It would be nice to have some XRay mode where only one colour is shown at a time (grey count as three colours)
- It's a bit hard to drag luggage from the grid once it is full of other coloured luggage in the same spot. Not sure how to deal with it though