Tower of Trials is a Rogue-like mod of Paper Mario: TTYD by Jdaster64. In it, Mario storms the newly-renovated Hooktail Castle, fighting through a battery of enemy encounters and building up an arsenal of party members, moves, badges and other rewards! Once you've finished a run, you can spend your winnings on items and cosmetic upgrades in Petalburg, or do more runs to work toward 100% completion of the Journal, including dozens of achievements!
Nearly all random elements of runs are seeded, so once you unlock the ability to set a seed, you can race other players on a level playing field!
For a detailed overview of Tower of Trials' unique features, see the PDF companion guide.
If you're interested, check out this page for information on some of my other Mario RPG mods.
Before attempting to install the mod, make sure you have an unmodified image of the North American (U) version of TTYD for the GameCube (md5 of db9a997a617ee03bbc32336d6945ec02).
Tower of Trials will not work on any other version of the game, and support is not guaranteed with other mods, custom textures, etc.
After verifying you have a working copy of the game, simply run the appropriate patcher executable for your platform from the "Releases" page, provide it the unmodified TTYD .iso image, and it will generate a patched copy of the game, which you can simply run, without any loader codes or such.
Tower of Trials uses a separate save data file from the original TTYD, so make sure whatever memory card you're using has space for an additional 17 blocks.