I agree with the previous feedback. I like the concept but found the implementation of the map a little confusing, there are some "QoL" issues (if you choose the tutorial and then retry the level it plays the tutorial again, and it has really slow text speed), and maybe I missed it, but I didn't see anything that told me about the current "status" of the chain reaction or when it was being activated.
That said, this is very impressive as a solo jam effort and I think (if you want) has the starting pieces of a game that could be really relaxed and fun.