In the now lengthy Castlevania series, Order of Ecclesia should rank as the second best of the Metroidvania styles. First place should go to Symphony of the Night by a very slight margin and third to Aria of Sorrow. The funny thing about even saying one Castlevania game is better than another is that very little changes in any of them. Plots are almost non-existent and characterization even less so. You’re always there to kill Dracula or someone is trying to be Dracula. Like its sci-fi sister Metroid, you spend most of the game exploring a map or collecting abilities that let you explore more regions. The RPG system is a fairly basic leveling up routine with variety added only through how you collect abilities. The biggest difference amongst the titles is how each Castlevania game handles difficulty.
When I refer to difficulty, I don’t mean it in the abstract sense of the word. I mean the player’s quantifiable ability to ignore the game design’s desire to kill them through the use of health potions, overpowered weapons, being immune to damage, and general button mashing. Common sense indicates thst you should go soft on the player in this department while they learn the ropes and then eventually put your foot down and force them to actually play the game. Difficulty is then perceived because I have to change the way that I am playing the game in order to continue it.