Hello there! Thank you for playing MailSnail and sharing your feedback. I am glad to hear that you find the concept of the game interesting.
Please note that the movement controls in the current version of the prototype were more of a quick approach and were not the main focus. However, I understand that the clunky movement may detract from the overall experience.
Regarding the map structure, I intentionally designed it as a tree structure rather than a traditional 2D grid to make the memory exploration aspect of the game more challenging and engaging. However, i do understand that it may not be everyone's cup of tea.
Thanks again for playing MailSnail and for taking the time to share your thoughts.