Labyrinth of Touhou Tri -The Dreaming Girls & The Mysterious Orbs-

This mechanic is frankly, perfect to allow and demonstrate Touhou's cast, as each have unique skill trees and Wildly different Strenghts and Weaknesses.

It has a few systems I wish other RPGs would adopt (e.g. the equipment system making 'trash' drops exciting, the difficulty/challenge level systems, clear tutorials and transparent systems).

The plot is genuinely engaging, with a lot of thought-provoking themes and lines that I can fondly think of (it even makes you sympathize with a ♥♥♥♥♥♥♥ faceless object).

This Formation/switch mechanic is integral to the gameplay, and I could make a similar comparison to FFX's combat... just, widly more characters.

Both the bosses and regular enemies have varied gimmicks and it can be fun to puzzle out how best to tackle each challenge with your growing roster of unique characters, each with their own gimmick and specialty.

While usually not a strength nor a requirement for most dungeon crawlers, the graphics, music and story are very well-made.