Case study · Impact game · by Bunny & Gnome*

Trash Monsters

A free game that teaches kids to sort their trash. In a version made for their own town.

iOS · Android · WindowsFree, no adsAges 8–12DE / EN / FR
The trash monsters welcome you to Trash Monsters
GIGA-Maus2016
21towns and districts with their own version
300,000+downloads in total
4.7 ★on the App Store
Since 2015live, and still maintained

Store figures, September 2026. Towns: active and past licences, including Zürich.

The idea

Every town sorts its trash differently. So every town gets its own game.

Kids help charismatic trash monsters run a sorting plant. Each partner town gets its own bins, its own rules and its own planet, from Karlsrux to Duisburx.

With its intuitive gameplay, witty illustrations and educationally sound content, Trash Monsters convinced us.

Verbraucherzentrale · App test, 2025

Top marks in every category of the test, including data protection and child safety.

★★★★★“This game is fun and useful at the same time.”Google Play review
Recognition
2016 · WinnerBest learning game, family
Quality sealindependent jury
Zukunftspreis Kommunikation2014Sky special prize
KULT Kulturpreis2014Audience award
Behind it

Two people,
21 towns

Made by Bunny & Gnome, the studio of Brice Clocher and Greta Hoffmann. Sound design and music: Mathilde Hoffmann, Martin Buntz and Eric Beckmann. Towns license their own version and keep it running with a yearly maintenance contract.

Trash Monsters on a tablet, with picture book, colouring pages, sorting cards and a monster hand puppet
OriginMade with Stadt Karlsruhefunded by MFG Baden-Württemberg
GrowthFrom Karlsruhe to Zürich16 towns via AWRRW alone
Beyond the appPrint, and plush on requestbook, colouring pages, sorting cards and so much more merch
Stadt KarlsruheStadt ZürichAWRRW

Your town sorts differently? We can do that.