Hollowdelve

Fight through seven depths. Build a weapon storm. Escape.

Hollowdelve is a pocket-sized action roguelite for your phone and your browser. Your weapons fire on their own — you focus on moving, dodging and choosing your path. Every run takes you through seven acts with eight rooms each, from the dungeons and sand tombs down to the poison swamp, the shadow keep, the bamboo grove or crystal grotto, the ruined city and finally the Hellmaw.

Pick your route on a branching act map, grab upgrades on every level-up, mix elements into deadly reactions and see how deep you can go.

Features

• 7 classes: Knight, Ninja, Fire Mage, Hunter, Samurai, Monk and Monkey Boxer, each with its own weapon and special ability
• 29 weapons (including 2 signature weapons per class) that level up and evolve into stronger forms with the right trait
• 36 relics, including a signature relic for every class and cursed ones with a real trade-off
• 5 elements, 10 reactions: freeze, burn, poison and shock your enemies, then combine them
• 73 enemy types and 17 bosses across 10 worlds, with telegraphed attacks and a second, enraged phase
• Branching act map with fights, elite enemies, treasure, shops, shrines, rest sites and encounters with strangers who make you an offer…
• Reroll and banish on level-ups, so you stay in control of your build
• Class Mastery with new looks and starting bonuses, permanent upgrades in the Forge, achievements, curse levels and a bestiary to complete
• Auto-save after every room, so you can close the game and continue later
• Gamepad support, adjustable UI size, volume sliders, English and German

Controls

Phone: put your finger anywhere on the field and drag to move. Big button = special ability, small button = dodge (short invincibility).
Keyboard: WASD or arrow keys to move, Space for your special, Shift to dodge, Esc to pause.
Gamepad: stick or d-pad to move, A for your special, B/X/RB to dodge, Start to pause.
Tap your weapon bar in the top left to see all your gear and what it does.

Best played in portrait mode on a phone, or in fullscreen on desktop. Your progress is saved in your browser; clearing your browser data will reset it.

About this project & use of AI

Hollowdelve is a solo hobby project. I want to be upfront about how it was made:

• Code and in-game text: written with AI. I made the game together with Claude, an AI assistant by Anthropic, in a chat conversation. I came up with the ideas, decided what goes into the game, playtested it and gave feedback; Claude wrote and changed the code and the in-game texts based on that.
• Art, music and sound: made by humans. There is no AI-generated art, music or sound in this game. All graphics, music and sound effects come from free asset packs made by human artists (see credits below).
• Screenshots and GIFs on this page are real captures from the game.

Credits

• Characters, monsters, bosses, items, effects, music and most sound effects: Ninja Adventure Asset Pack by Pixel-boy and AAA (CC0)
• Dungeon walls, floors, props and additional monsters: 16x16 DungeonTileset II by 0x72 (CC0)
• Additional sound effects: RPG Essentials SFX - Free by Leohpaz
• Fonts: Pixelify Sans and Atkinson Hyperlegible (SIL Open Font License)

Huge thanks to these artists for sharing their work.

Feedback

The game is still being balanced. If something feels too easy, too hard or broken, please leave a comment — it really helps!