So for the purpose of fairness I tried again and this time I got to the castle. This time around I was having a blast but then another fatal bug happened (playing the web version). I was in the castle's basement then swung my baseball bat and the game froze, seemed to happen for no discernible cause.
Either way, I'd rated it before but I feel a lot more qualified to rate this now. Awesome game in spite of those mishaps, not only does it feel like an adventure but also feels very true to the GB.