I'm late to the party, but heres my two cents:
I haven't played a lot of GB games so I'm quite ignorant to the "games that defined the system" or "what games were like on the system". That said, the game is very pretty given the style its going for. The writing is cute but after seeing the first few lines 5 times (I was testing things out), it wore out its welcome. The sound effects were a good touch but 10 minutes after playing, I'd be hard pressed to point any of them out in particular.
Its a gamejam so I knew there were would be a hard time limit to push things out the door but the game is very empty. There aren't many enemies to shoot/dodge and that created moments where I'm just waiting for the next thing to happen. Again. And again. And again. Combined with my previous issue, having a built cheat code was a godsend. By the time I got to the second level I was facetanking hits and healing through it.
