I mean, there's that, and then there's how Tower of Druaga works, where each floor has a treasure chest that only appears if you do a specific thing, which you're not told what that thing is even after you did it. And the chests contain items, some of which are mandatory to complete the game, and some of which are cursed and will actively prevent you from completing the game. And sometimes, if you didn't get an item from a previous floor, then you'll get a cursed item instead of the item you need to beat the game, which you're not actually told when it happens. Also, some actions will cause you to be teleported to a previous floor; theoretically so that you can obtain an item that you need and didn't get, but in practice if you get teleported back, it either won't be far enough down to actually get that item, or you'll be stripped of another item you needed in the process.This is the first time I've heard of Tower of Druaga. An arcade game where you need to take notes is kind of an odd design. I'm not surprised it flopped on re-release, games that don't spell everything out for the player or give much guidance do pretty poorly for a modern audience. Most people don't have the patience to take notes and experiment. It's not that you need other people, it's just that you need to have patience.
And since you're not even told what the items actually do when you pick them up, you may not even know that you have a cursed item or one of an insufficient quality until you find yourself softlocked right near the end. And I do mean right near the end, as even on each of the last two floors, it's possible to get teleported back and softlocked if you don't do exactly the right thing (which you aren't even given hints at what that is.)
Sure, the game is not super-long to beat in a single sitting, so restarting doesn't lose you much progress, but without a guide or a lot of friends to discuss your findings with and theorize about chest triggers and item effects, patience, note-taking and experimentation will only get you so far. And if you think I'm wrong, then by all means, prove it:
I don't believe this version provides any in-game guidance. It's based on the Famicom port but the mechanics are AFAIK the same.