To heal in Hollow Knight, hold the down arrow key to focus and restore health. You need Soul energy to heal, which you collect by hitting enemies with your nail.

Charms are special items you can equip to customize your knight with various abilities and buffs, such as increased damage, longer attack range, or improved healing. You can only equip a limited number at a time based on your available notch slots.

Press the C key to cast spells once you have unlocked them during your adventure. Spells consume Soul energy, so you will need to build up your Soul meter by striking enemies before you can cast.

You can play Hollow Knight for free right here on GlorpMath. No downloads, sign-ups, or payments required. Just click play and start having fun instantly!

Yes! Hollow Knight runs directly in your browser and works great on Chromebooks, laptops, tablets, and phones. No installation needed.

GlorpMath hosts Hollow Knight directly on our servers, making it accessible from most school and work networks. Just visit GlorpMath and start playing!