I think the idea was fun : it mixed memory, recognition, and good execution ofc. I like how you can make a lot of combinations with a limited palette & icons.
I struggled at the beginning to understand the rules, I think it should be clearly stated in the rules that the dragon tells you the items you should NOT give him, because I was confused the first minutes.
Lovely art, amazing palette choice. Nice audio too.
The pickup needs a rework : I noticed after testing that the pickup point is at the top of the character when you go upwards, and at the bottom when you go downwards, which made it feel inconsistent. If it was difficult on purpose, I think it should still be more consistent as there is already the time constraint.
I think the difficulty should increase slowly : it's so easy to lose after picking up only 2 object because you are discovering the game, the rules, etc. and you are slow.
Good game !