Thank you all for the feedback. I really appreciate it. Seems like all those hours I put into designing the level were worth it.
@aurel Keyboard shortcuts are a possibility. I could add those to a post-compo version. Maybe number keys 2 and 3 for the abilities and WASD or arrow keys for power 4. Mouse click will still be the primary way to control things though.
In an early iteration of the game, dots could only be expanded by clicking the leftmost symbol, but that was really tedious so I changed it to allow clicking anywhere in the line.
A few people have suggested grid now, so I'll try that to see how it looks. I want to keep the completely blank look of the start of the game, but it could be a thing added in Power 1. A full grid would give away the size of the map, but another possibility is to show it only for the explored areas.
@erilhir See @pandan's screenshot for a hint for how to do 4.
@suchista I could make the grey question marks fainter.
(**Spoiler**) Here's the map I used to help with designing the levels:
map.png
(The meaning of the map is left as an exercise for the reader.)
This is a screenshot of the file open in my text editor. I have invisible characters set to visible, so here they act like a grid. It still requires counting to line things up though. I could try a similar appearance in the game. What do you think? Does it help?