【公式】UNDERTALE発売記念トレーラー（Xbox One）

This 2015 indie RPG/Adventure game casts you as a child who falls into the Underground, a realm populated by banished monsters. The core loop involves navigating hostile environments, solving puzzles, and engaging in turn-based combat that uniquely blends traditional mechanics with "bullet hell" dodging sequences. Its distinctive feature is player agency: you can choose to fight or spare every enemy, with these choices fundamentally altering the story and world outcomes.