I think this game might be okay. I feel like you should add some music in the game to make it livelier for a GB game. Also, you should add a Up and Down View of the Old Man when moving the direction.
I wanted to originally add music to the game but I'm not good at making music and I wasted the last 6 hours I saved for the music debuging why the input in the web build isn't working. Great idea with the character though, thanks!