Nice work! I really enjoyed the game concept, and found it engaging.
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Thinking a little about the UX...
I had trouble mentally mapping
W S
A D
to my mental model of four directions
W
A D
S
and then to which color each one was.
I wonder if showing the potion colors UI in the same layout (four directions) as keyboard/controller would make it easier to remember which key is which color?
Alternatively, you could make them potions on a belt displayed horizontally, and then use 1,2,3,4.
Thanks!
