!!The anime
* AdaptationDisplacement: Mostly played straight, except among gaming communities.
* MartyStu: Jil in the first episode fantasy is blatant parody of one.
* MoralEventHorizon: [[spoiler:Neeba, either since his betrayal in season 1, or his killing Henaro at the end of season 2.]]
%% * TearJerker: Done in episode 7

!!The game
* AmericansHateTingle: Or more specifically, Americans Hate GuideDangIt Moments.
* ScrappyMechanic: How in the '''''hell''''' do you find any of these treasures without consulting a guide?!
* ThatOneLevel: Level 13. It contains a treasure necessary to beat the game, that can only be obtained by killing all the {{Teleport Spam}}ming enemies on the floor. [[MyFriendsAndZoidberg Also the slimes.]] And this is assuming [[GuideDangIt you even knew what to do]].
* ValuesDissonance: Quite possibly why the game is far more successful in Japan than everywhere else. Japanese gaming culture is more communal and more open to players sharing strategies at arcades, which was vital if players wanted to complete the original game, especially before the age of publically-available, fast, and affordable internet coupled with sites like [=StrategyWiki=] and Website/GameFAQs. In the West, the concept of arcades as social environments is generally lost on players, so players weren't as willing to collaborate to figure out how to find the next treaure. This is made worse today with [[StopHavingFunGuys the idea that using guides and asking other players for help makes you an idiot who shouldn't be playing the game]].
** That said, ''Namco Museum Volume 3'' includes a hint booklet providing a general walkthrough, and ''Namco Museum DS'' can also display a hint guide for the current floor on the screen opposite of the screen being played on.