Pharloom Heck

SpiderHeck's spider, loose in Pharloom.

You play SpiderHeck, with all of its wobbly physics, web-swinging and laser weapons. The place you swing through is Pharloom: the mod reads the real rooms of Hollow Knight: Silksong from your own installed copy while the game runs (their art, their ground, their exits) and builds them around your spider.

What you do

• Hold any key on SpiderHeck's title screen to join, and you drop into the Moss Grotto at the spot where a new Silksong save begins, next to Hornet's broken cage.
• Walk on floors, walls and ceilings, jump, and web-swing across Pharloom's caves.
• Go through an exit and the next room loads in about half a second. Rooms connect the way they do in Silksong, so you can keep going: Bone Bottom, the Marrow and beyond.
• SpiderHeck's own weapon pickups and a few of its armed wasps wait in every room.
• Dying or falling out of a room puts you back at that room's entrance.

You need

• SpiderHeck (the game you play)
• Hollow Knight: Silksong, installed on the same PC (its rooms are read from there; nothing is copied)

Keys: F7 returns you to the room's entrance if you get stuck. F6 re-enters Pharloom from SpiderHeck's lobby. Esc is SpiderHeck's own pause menu.

Not in this version: Silksong's enemies, bosses, NPCs and music (only the rooms come across), and playing with friends. Silksong's lighting and blur are not reproduced, so some rooms look flatter than in Silksong.

Credits: mashup by Eric, built with Claude. Uses BepInEx 5 (MIT), AssetsTools.NET by nesrak1 (MIT) and Unity type data from AssetRipper/Tpk (MIT). SpiderHeck is by Neverjam and Hollow Knight: Silksong is by Team Cherry; this is a fan project and is not affiliated with either. MIT licensed, remixes welcome.