I never thought I’d be writing about spoilers for a Rhythm Heaven game, but here we are. If you are currently working your way through the minigames and the RPG-inspired Beatspell mode in Rhythm Heaven Groove, consider this your warning: I am about to dive into the game's best-kept secret.

When Rhythm Heaven Groove was first revealed in the June Nintendo Direct, I was immediately intrigued by Beatspell. With its timed-attack mechanics and weird, charming enemy designs, it gave off strong Patapon and StreetPass Quest vibes. While the main minigames and remixes are sublime, Beatspell has become the standout experience for me. Nintendo labels it an 'Action RPG,' but that is a slight misnomer; it is essentially an adventure mode where you guide a character named Yu through caves, defeating enemies using beat-timed magic and collecting upgrades along the way.

The Random Cave Quest Roguelike

While the main Beatspell campaign is linear, the real magic happens after you finish it. Completing the story unlocks the 'Random Cave Quest' chapter, and it is a full-blown roguelike that I have struggled to put down. Unlike the main campaign, this finale mode introduces:

  • Branching Paths: Each run offers different pathways with unique monster match-ups.
  • Willpower System: A new health mechanic that prioritizes speed during encounters.
  • Deep Magic Customization: A significantly expanded spell system that replaces the simple 'Bolt' spamming of the early game.

The satisfaction of crafting a build in this mode is immense. In my early runs, I relied on simple damage spells like 'Bolt' and 'Cure.' In the roguelike finale, I’ve had to learn how to chain spells together. I now regularly use 'Amplify' to boost my attack, 'Poison' to start the damage-over-time process, and 'Viruses' to capitalize on the poisoned state of my enemies. Chaining these to the beat of the backing track feels incredible.

Why Beatspell Outshines the Main Game

Because this is a roguelike, your success depends on the three spells you find at Magic Circles during each run out of the 19 available. It forces you to adapt constantly. Some runs are easier than others—the fluctuating rhythm of the later stages combined with complex button combos for high-level spells can be brutal—but the 'one more run' pull is undeniable.

I’ve spent hours in this finale mode, to the point where I have admittedly neglected the main game to focus on my runs. While it isn't Hades in terms of sheer depth, it is an incredibly accomplished experience for an optional extra. I’ll keep playing the remixes, but I’ve already decided: I would be more excited for a beefed-up, standalone Beatspell release than almost anything else. #YuForSmash starts here.