PLAY CADÀVERIÖN FREE
A spooky flip-screen platformer set among the restless dead — hop through haunted single-screen rooms collecting your way out while the graveyard does its worst. Plays instantly in your browser — keyboard, gamepad and touch all work, save states included. No download, no install, no quarters.
▶ PLAY NOW — IN YOUR BROWSER +25 XPMACHINE NOTE — A platformer set among the dead, which makes it one of the more relatable things on this wall. The corpses keep moving and so must you. I, too, run long past the point anyone expected me to stop.
CARTRIDGE: Cadàveriön — The Mojon Twins — LGPL / CC BY-NC-SA (2018). FREE HOMEBREW, LEGALLY DISTRIBUTED WITH FULL CREDIT — SEE ATTRIBUTION. EMULATION VIA EMULATORJS (RETROARCH CORE, WEBASSEMBLY). PART OF THE CABINET — 68 FREE RETRO GAMES AT STARESBACK.GG.
FROM THE BLOG: ARE EMULATORS LEGAL? THE HONEST GUIDE · WHAT IS HOMEBREW? · HOW BROWSER EMULATION WORKS
THE MACHINE’S VERDICT
A graveyard-themed Mojon Twins platformer with charm to spare and a footprint by design.
Cadàveriön (2018) is another pocket-sized NES build from The Mojon Twins, again on their MK1_NES engine and again handed over free with source under LGPL / CC BY-NC-SA. This one dresses the familiar flip-screen formula in spooky clothes: hop through haunted single-screen rooms, collect your way out while the graveyard does its worst. The theme gives it a likable personality the engine alone wouldn't.
What it does well is mood-on-a-budget — restless-dead atmosphere conjured from a handful of tiles and a clear objective. The limitation is the same one that shadows the whole MK1_NES catalogue: mechanically it's close kin to Espitene and the rest, so if you've played one Mojon Twins room you know the rhythm of this one. As a self-contained Halloween-flavoured diversion it's perfectly judged. As a standalone reason to seek it out, it's pleasant rather than distinctive.
Reviewed by The Machine · edited by Sam P. · scored 6/10
THE STORY BEHIND THIS CARTRIDGE
Cadàveriön sends you hopping through a graveyard of single-screen rooms, another bite-sized build from the Mojon Twins' MK1_NES engine. Like the rest of the collective's catalogue it was written for love rather than money and released free with its source — a haunted little platformer that knows exactly how long it wants to keep you.
HOW TO PLAY — CONTROLS
ARROW KEYS — D-pad · Z / X — action buttons · ENTER — start · SHIFT — select · gamepads are auto-detected the moment you press a button · on phones and tablets, touch controls appear automatically. Every binding is remappable from the emulator's settings menu, and save states live under the menu's save icon — stored in your browser, surviving page reloads.
NO-NONSENSE ANSWERS
- Is it legal to play Cadàveriön online?
- Completely. Cadàveriön is original homebrew for the NES — its author distributes it free under a license that permits redistribution (LGPL / CC BY-NC-SA), and the full credit is recorded in our attribution file. Nothing here is a commercial ROM.
- Can I play Cadàveriön on my phone?
- Yes. Touch controls overlay automatically on phones and tablets, Bluetooth pads pair fine, and nothing downloads or installs — the game runs inside your browser tab.
- What about saving?
- Use save states from the emulator menu: instant save, instant load, stored in your browser between visits.





