Hollow Summit

Climb Celeste as the Knight. Created by Brady Laury.

Hollow Summit puts Hollow Knight inside Celeste's real chapters. The Knight, Hallownest's bugs, nine bosses, their music, the mask and soul display and the sound effects are all read from your own installed Hollow Knight while Celeste runs, so you need both games.

What you do

• Play every Celeste chapter as the Knight. All of Celeste's platforming, its dash, jump and wall climb, is untouched.
• Swing the nail: one slash kills a bug, and a down slash pogos off bugs, bosses and spikes.
• Fill your soul with nail hits, then hold Focus to heal or cast Vengeful Spirit. Howling Wraiths, Desolate Dive and their upgrades (Shade Soul, Abyss Shriek, Descending Dark) are earned by beating bosses.
• Spikes and pits kill instantly, as in Celeste. Bugs and bosses cost a mask, as in Hollow Knight.
• Meet different bugs in every chapter, sixteen kinds in all: Crawlids and Vengeflies in the Forsaken City, Mosscreeps in the Old Site, Tiktiks and Booflies in the Resort, Mantis Youths on Golden Ridge, Shadow Creepers in the Mirror Temple, Crystal Crawlers and Wingmoulds in Reflection, Baldurs on the Summit. They die in one hit, so movement stays the point.

A boss ends every chapter

Each one keeps its Hollow Knight look and size but fights as a hard, fast movement duel in its own open-air arena, with its own Hollow Knight music and a sky that burns hotter as the fight goes on. These are long fights, built to take minutes.

| Chapter | Boss | |---|---| | Forsaken City | False Knight | | Old Site | Hornet | | Celestial Resort | Soul Master | | Golden Ridge | Sisters of Battle, all three at once | | Mirror Temple | Broken Vessel | | Reflection | Watcher Knights, six of them, two at a time | | The Summit | Nightmare King Grimm | | Core | The Hollow Knight, in three phases | | Farewell | Absolute Radiance, rising out of the sun above the clouds |

Beat a boss and its soul flows to the Knight, its epitaph closes the fight, and the chapter completes. The nine arenas are also their own chapter, Hall of Gods, for fighting them back to back.

Outside the levels, Madeline's portraits show the Knight and the chapter-select mountain sits in Hallownest's deep blue.

Controls: one key per action

| Action | Key | |---|---| | Move | W A S D | | Jump | Space | | Dash | K | | Grab / climb | Left Shift | | Nail (hold W or S to swing up or down) | J | | Focus (hold on the ground to heal) | F | | Vengeful Spirit | L | | Howling Wraiths | U | | Desolate Dive (in the air) | I | | Talk | E |

The mod sets this layout in Celeste's keyboard bindings the first time it runs; you can change any of it in Options and in Mod Options (from the pause menu), where you can also switch off the bugs or bosses or unlock every spell from the start. On a controller the nail is right stick click and Focus is left stick click.

Single player. A first full playthrough runs roughly 25 to 40 hours. The first start takes a few extra seconds while it reads Hollow Knight's files.

Credits

Created by Brady Laury, built with Claude (AI assistance). Hollow Knight is by Team Cherry and Celeste is by Maddy Makes Games; this is a fan work, not affiliated with either. Uses Everest, AssetsTools.NET by nesrak1 and AssetRipper's texture decoder and type tree data, all MIT licensed. The mod's own code is MIT licensed and may be remixed.