pet peeve of mine, one should be able to progress the text in a box by pressing anywhere on screen, not specifically on the ok button.
when moving left or right, the up and down movement keys are ignored. this leads to pretty unpleasant movement on the grid
while moving, the character sprite looks kind of blurry.
now i'm kind of nitpicking, but imho until you get a professional artist to draw the art for you, i would just stick to a screenshot for the thumbnail. the current one is kind of soulful, but it doesn't really make people want to click on it to download it, and it also doesn't really communicate to the player that the game is an old school 2D rpg.