Tower of Trials is a mod for the original GameCube release of TTYD, which puts a Rogue-like spin on its combat, offering a choice of rewards after every battle. The core combat systems have been rebalanced, with tons of new partner moves added, and tons of additional features and settings to make every run feel unique.
You can check out Tower of Trials for yourself here:
https://github.com/jdaster64/ttyd-tot
Join my Discord server for updates and chat about the project (and games, music, and other stuff as well):
/ discord
This project is a non-profit fan work unaffiliated with Nintendo, and I make no claims to ownership of the characters, settings, etc. involved. You can support the original developers' work by purchasing the Switch release of TTYD on Nintendo's eShop or at many physical and online retailers!