Hollow Knight places you beneath the quiet surface town of Dirtmouth into Hallownest, a sprawling underground kingdom filled with branching paths, hidden rooms, and environmental storytelling.

The core gameplay loop weaves tight nail-based melee combat with nonlinear exploration — you fight enemies to collect Geo (the game's currency), discover new movement abilities that unlock previously inaccessible areas, and equip Charms to customize your build for different…

What makes Hollow Knight exceptional among indie Metroidvanias is how its systems feed into each other. Combat generates Soul, which you spend on healing or offensive spells, creating a constant risk-reward tension during every encounter.

Boss fights demand pattern memorization and precise dodge timing. Between battles, the interconnected world design rewards curiosity — nearly every dead end hides a Mask Shard, a Charm, a Grub to rescue, or a lore tablet that deepens the story.

The hand-drawn art and Christopher Larkin's orchestral soundtrack tie everything together into a cohesive, atmospheric experience that consistently surprises across 30+ hours of content. Hollow Knight uses a tight, responsive control scheme on keyboard.

The default PC keybindings are: All keys are fully remappable in the options menu. The game also supports controller input, which many players prefer for platforming sections.

Your primary goal is to explore Hallownest, defeat its corrupted guardians, and uncover the truth behind the kingdom's collapse. There is no single linear path — you choose which areas to explore based on the abilities you've unlocked.

The game has multiple endings, determined by which optional bosses and quest items you've found before the final encounter. Soul is your most important resource. You earn Soul by striking enemies with your Nail.

Once collected, Soul can be spent in two ways: hold A to Focus and heal one Mask (health point), or tap A / F to cast offensive spells like Vengeful Spirit (a projectile) or Desolate Dive (a ground slam).

Managing when to heal versus when to attack with spells is the central combat decision in every fight. Charms are equippable modifiers found throughout Hallownest that alter your abilities.