This is a cute little game, and I could see it growing into something really good. The artwork and sound are top-tier.
Improvement suggestions, if you're interested in expanding this into a full game:
- Ability to pause time so the player can think and make decisions (and also read the "Quests" list on the side, right now time progresses so quickly that even looking at the tile choice buttons is a costly distraction)
- Hotkeys for selecting tile types
- More quests to complete, give me some interesting challenges!
- Timers or other sort of indicator for how long each tile will last before reverting