Hollow Warden: a 3D Platformer Hero vs. a Soulslike Boss

Triple jumps, wall kicks and ground pounds against a soulslike boss: jump its sweeps, hop its shockwaves, break its posture, then grab it and spin-throw it. A browser tribute to ER Mario.

A clean-room tribute to ER Mario (Mario in Elden Ring) by deltarooo.

Hollow Warden

First load downloads the game (~60–120 MB), then it's cached.
Needs a desktop browser with WebGPU or WebGL2. Keyboard + mouse.

Tab shows the controls

What you can do

  • The full platformer moveset: triple jump, long jump, backflip, side flip, wall kick, dive and ground pound.
  • The boss telegraphs a sweep you jump, a leap slam with a shockwave you hop, and a charge you sidestep. It gets faster below half health.
  • Punches, dives, ground pounds and head stomps fill its posture meter. Break it and press E to grab, spin and throw.
  • An eight-wedge health meter, with coins around the ring that refill a wedge each.

The modes

Platformer

Triple jump, long jump, backflip, side flip, wall kick, ground pound and dive, with shards to collect. Inspired by N64-era 3D platformers.

Controls: Space jump (chain for double/triple) · Ctrl crouch / ground pound · Ctrl+Space long jump or backflip · F dive

FAQ

Can I play Platformer online for free?
Yes. Hollow Warden runs in your browser with WebGPU or WebGL2. It's free, there's no account, and you don't need any game files. Desktop builds come from its GitHub releases.
Is it made from the original games?
No. Every mechanic is a clean-room implementation written from observed behaviour and published values, with original code and CC0 or self-made assets. The modes are inspired by N64-era 3D platformers.
How is this different from ER Mario?
ER Mario (Mario in Elden Ring) links or rewrites the original games, so you need to own them and run it on a PC. This tribute recreates the same mechanics from scratch, so it runs instantly in a browser with no game files.

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