I LOVE this idea and interpretation of the scale theme — I would totally play a full adventure with these two. Not sure how you have so few ratings, it's a real gem! Maybe if you had your characters front and center on your thumbnail (like the end screen with the gnome riding on his shoulder) since they're very charming.
Only suggestions would be to have it so the giant could maybe drop a waypoint or tap the ground or something similar, especially if you added more levels later with increasing difficulty. And to maybe speed up the zoom in and out slightly. Would be a fun concept for a two-player system as well.
Not sure what your plans are for it, but would love to see it continued! Great idea with so much charm.