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Goonya Monster

Also known as Goonya Monster, gm, goonya monster

GOONYA MONSTER is a party game where you go on a rampage playing as characters designed by Terada Tera. Split into Busters and Monsters to face off against one another! An absolutely absurd battle awaits you!

Last update
21 May 2026
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Latest update
Announcement

【Out Now!】Jump Into the Goonya Monster Spin-Off Casual Games!

The Goonya Monster universe expands today with four brand-new spin-off titles, each starring fan-favorite characters in their own casual gameplay adventures. With simple, intuitive controls, these games are easy to pick…

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Latest updates

Update history

Browse past updates and patch notes for this game.

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Gallery

In-game media

Achievements

Community progression

Top picks from 45 Steam achievements, sorted by player unlock rates.

  • First GoalPurify your first Soul as a Buster in an Episode Match.68.3%
  • Rookie Of The Year Joins The Fight!Win an Episode Match as a Buster for the first time.63.5%
  • Hard CarryPurify 4 Souls by yourself in an Episode Match.47.0%
  • Craving That WinGet 3 straight wins as a Buster in Episode Matches.40.7%
  • First-TimerBuy an item in the shop for the first time.35.3%
  • First BiteSuccessfully feed for the first time as a Monster in an Episode Match.32.2%