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!
We are not affiliated with IsThereAnyDeal.














A 3 vs 1 party game with cutesy characters. Busters can use a unique cast of weapons, while Monsters can unleash powerful skills! Everyone is sure to have a blast playing!
Lasers! Shotguns! Flamethrowers! Round up the enemies using an exhilarating line-up of weapons! The Buster's Win Condition is to defeat Undead enemies roaming the stage and collect their souls.
Super-sized Beams to Super-sizing yourself! Use your ultimate "Predation" attack to defeat the Busters! Annihilate all the Busters, or survive until the time limit, and the Monster's got the Win!
Playing Episode matches unlocks custom Items! Dress up your favourite characters in whacky outfits!




"Goonya Monster" welcomes everyone to share it through social networking services and video streaming services. In order to ensure that everyone can post and play live games with peace of mind, we have compiled a set of guidelines that we expect everyone to follow at a minimum. Please check the guideline at the URL below, and we hope that a lot of people will enjoy.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.














A 3 vs 1 party game with cutesy characters. Busters can use a unique cast of weapons, while Monsters can unleash powerful skills! Everyone is sure to have a blast playing!
Lasers! Shotguns! Flamethrowers! Round up the enemies using an exhilarating line-up of weapons! The Buster's Win Condition is to defeat Undead enemies roaming the stage and collect their souls.
Super-sized Beams to Super-sizing yourself! Use your ultimate "Predation" attack to defeat the Busters! Annihilate all the Busters, or survive until the time limit, and the Monster's got the Win!
Playing Episode matches unlocks custom Items! Dress up your favourite characters in whacky outfits!




"Goonya Monster" welcomes everyone to share it through social networking services and video streaming services. In order to ensure that everyone can post and play live games with peace of mind, we have compiled a set of guidelines that we expect everyone to follow at a minimum. Please check the guideline at the URL below, and we hope that a lot of people will enjoy.
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!
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.