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Grave Mistakes Opens Steam Playtest Ahead of November 26 Launch

Oro Interactive has opened a Steam playtest for Grave Mistakes, a co-op horror comedy from Belgian studio Happy Volcano, running until November 9, 2026.

Reporting from 1 source: 4Gamer.net.

Why it matters

The playtest gives Happy Volcano a window to test the voice-chat coordination and physics interactions that the funeral home tasks depend on before the November 26 release.

Grave Mistakes Opens Steam Playtest Ahead of November 26 Launch

Key Facts

  • The playtest runs until November 9, 2026.
  • Happy Volcano is the Belgian indie developer behind Grave Mistakes.
  • Grave Mistakes is scheduled for full release on November 26.
  • The game is planned to support Japanese for its interface and subtitles.

Up to four players staff a family funeral home, comforting mourners while cutting parts from bodies to feed a grandmother in the basement. The full release is set for November 26, with Japanese interface and subtitle support planned.

The test covers the funeral home loop: serving families, upgrading the facility, and feeding Grandma. Bodies rot over time, so players patch them up with whatever is at hand, including a shovel for an arm or a basketball with a photo attached for a head. Tasks run on physics interactions, and players coordinate over voice chat so mourners do not catch on.

Money from the work goes into facility upgrades. Miss Grandma's nightly demand for body parts and one employee becomes that night's dinner. The game is planned to support Japanese for its interface and subtitles.

Written with AI by Yomimono from the 1 cited source below, including Japanese-language reporting where cited. See our editorial policy.

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Grave Mistakes Oro Interactive Happy Volcano

Sources