Hollow Dash

A Geometry Dash portal opens in Hallownest.

What you get

• A Geometry Dash cube portal stands in King's Pass. A second one appears next to you wherever your save loads in.
• Walk in: the Knight auto-runs the real Stereo Madness (the cube part, up to the ship portal), with Geometry Dash's own song, blocks, spikes and background.
• Geometry Dash 2.2 cube physics and hitboxes. Jump with your normal jump key; hold it to keep jumping.
• A progress bar and an "Attempt N" counter. Geometry Dash's own death and level-complete sounds.
• Your first clear on each save gives 100 Geo.
• Single player.

You need

• Hollow Knight. Melty installs the Hollow Knight Modding API for you.
• Geometry Dash, installed through Steam. Hollow Dash reads the level, song, sprites and sounds from your own copy when the game starts. No Geometry Dash files are included. If Geometry Dash is missing, the game tells you so in King's Pass.

Credits

• Hollow Knight by Team Cherry. Geometry Dash by RobTop Games. An unofficial fan mashup.
• Hollow Knight Modding API by the hk-modding community.
• NLayer (MIT) by Mark Heath and Andrew Ward, for mp3 decoding.
• Built with AI help (Claude) using universal-modder.