Evolution Worlds for Nintendo GameCube. Basically a port of the two Evolution games from the SEGA Dreamcast that was published and localized by Ubisoft, for whatever reason. The box art was vastly inferior to the "2000s Dreamcast-core" look of Evolution 2's original box art, as well as of course the Japanese version of this GameCube port.
The story was basically the same teenage male fantasy plot as Lunar: Silver Star Story, but without GameArts' legendary English localization turning the charm and humor up to 11 (although coincidentally, Ubisoft also made a butchered GBA port of that game called Lunar Legend around the same time), not that it resonated with girl-cootie-fearing 7-year-old me at the time. It was basically a sort of dungeon crawler where you had to learn to memorize traps and enemy patrol patterns, plus CAREFULLY manage your needlessly-limited inventory Resident Evil-style, which was kind of fun.
More importantly, though, the protagonist was stinkin' rich and lived in a mansion, and one of your party members was an elderly butler who exploded enemies with a freakin' shotgun as a result. That alone made the game a 10/10 experience I'll never forget for the remainder of my days.
