Interesting simple concept that makes for a fast game with lots of possibilities, I would make it more clear with very different colors, and specially colorblind proof them or allow configuration. As others said, hexagons make for weird movements with arrow keys. A solid entry for the competition, kudos
Viewing post in Greenlight Prototype: Hexology jam comments
As mentions in the Ideation phase https://roldy.itch.io/indiecade-greenlight-ideation-hexology
One of the chosen diversifiers was accessibility and I have a specific plan for colorblindlness. The final version won't use numbers but instead easily distinguishable shapes. And the shapes will be drawn with a 'line style;' solid, wavy, dotted etc... each line style will be paired with a color. So along with color, they will be rendered with a different linestyle.
Thanks for playing and the feedback. I'm looking forward to banging this into shape.