This shop no longer offers "Refund only"

Refund Demo mechanics update:

"Refund only" is gone. Two buttons on the sidebar — "Refund" and "Refund only" — felt like one button too many. So I refunded the refund-only button.
(Every official solution has been re-verified under the new rules; level 19 starts with one extra coin; your saves are unaffected.)

• Clicking "Start Game" now shows a one-time note from the author, in case the wordless design gets too cryptic
• First launch matches your system language; after switching languages the note appears once more (so you can't dismiss it in a language you don't read)
• Levels 2 and 16 gained wordless teaching hints (two arrows, really. I still refuse to add text. Text is ugly)
• The store page description was rewritten — something new is hiding right after "Level titles"

Players said: not enough to play.
The demo now runs up to level 35 — enjoy.
Note: the full game has 50.

The game is in its testing period — I read every single comment.
Getting stuck is normal; the ? in the ESC menu has your back.

— This announcement is non-refundable.