Why can't I jump with the up arrow? I've never understood why some game designers seem to dislike it.
I also seem unable to jump if standing on the edge of a platform, for no obvious reason.
The control over the direction in which I mine doesn't seem as predictable as I'd like. For a game which does it well, check out Miner Disturbance.
There doesn't appear to be a way to dig at diagonals, and most damaged rock doesn't fall down; the combination makes it too easy to trap yourself.
The shop is irritatingly inefficient. Why do I have to manually sell my ore? Am I going to want to hang on to it? Why do I have to manually refill my lamp? Accounting details like that are boring, and games should be fun.
User interface tip: in a dodging game, the player is looking at the character and the threats, and doesn't want to look away for other information. By all means put the hearts in the bottom-right, but add a splat animation so that I know when I die and can track it without having to look there.
There doesn't seem to be a way to enter a ^ symbol using a Spanish keyboard (where it requires two keypresses - combining accent followed by space). Could you create an alias key for that as you have done for sqrt?
Starts out fun but turns into a game where beating the UI is the challenge. If you make people playing your game want touchscreens then you're probably doing it wrong.
Great concept but the buggy controls are driving me nuts. More than half of the time after I press Space on a blue door the cursor keys stop working until I press Space again - and then sometimes, if I'm still on a door, it will trigger it again.
The last mission pretty much requires you to use a feature which I don't think it tells you about: you can move the city in the same way you move a blaster. Put it on high ground and you can gain enough time to set up some defences.
It's never good when a game depends for its difficulty on the player being a pain in the arse to control. Countering the slipperiness of the surfaces is harder than solving the puzzles.
It has three controls. Why do I need to use both keyboard and mouse?
You really should do something about hiding the Mochi stuff when the player clicks on "New game".
And really, it gets boring before it gets hard. If it ever gets hard.
Free tip on the UI: if the main controls are keyboard-only, then don't make me switch to the mouse to click OK on the "You completed the level" dialog.