This game sticks closely to the theme "joined together" (pun intended :3). Very fun, simple but yet challenging too. Overall this is game feel very simple to learn but yet complex to solve, easy for a new player to learn. I find this game nicely polish within 48 hr.
Fun part
-A lot of level and many ways to explore how to a puzzle. (almost got trick by the red button)
Suggestion for improvement
-Adding "auto restart" after the player dies will greatly improve the user experience, save time pressing "r" again.
- Changing those color squares to a simple Crypto Currency logo (Bitcoin, Ethereum) could enforce the game title "blockchain" as the word would lead the player to think about crypto.