Dark Bulb Games · Eindhoven
Cosy logic puzzles from the City of Light. Soon we’re launching our very first game: Petuko.
Small puzzles, big click. You fumble, you doubt, you almost see it… and then the light comes on.
Games
Case file 01
Pets on a house map, one per row and column. Read the clues, place every pet, and find the one left alone with the stolen toy. That one is the thief.
Hazel
Kiwi
Mochi
Pepper
TacoComing soon to iPhone, iPad and Android, with a free demo in your browser.
Arcade puzzle
Sudoku with colours and an arcade heart. Every row, column and box holds each colour once. Place the dots, chain combos and watch the grid light up.
Coming soon to iPhone, iPad and Android.
Explore ColorokuWe’re always working on new games.
For businesses & education
Besides our own games, we make custom games for companies, schools and events. From a knowledge quiz for your training to an eye-catcher on your trade fair stand.
Turn training or lesson material into a game: quizzes, puzzles and challenges people actually want to finish.
A game on a big screen or tablet that draws visitors to your stand, with a leaderboard and prizes if you like.
A small branded game for a campaign, product launch or your website. Plays on any phone, no app needed.
Example for education: Lexilight 
Example for trade fairs: Pocola Catch 
Example for promotion: Proefreis Made with the same care as our own games: fair, accessible and, if you like, fully in your own branding.
Tell us your ideaPoll
A new question every month. Tap your favourite: the answer with the most votes helps decide what we make next.
Blog
Sudoku, jigsaws, detective games: what do puzzles do to your mind? We dug into the research, caveats included.
Read moreA new games studio from Eindhoven, two games in the works and a question for you.
Read moreStudio
Every Petuko case and every Coloroku grid has exactly one answer, and you can always reach it by reasoning. No guessing, no luck.
Petuko has warm art and pets with opinions; Coloroku has neon dots, combos and a chiptune beat. Easy to start, hard to put down.
Labels for screen readers, calmer motion when you ask for it, a colour-blind skin in Coloroku, and up to seven languages.
Both games play offline, without ads or tracking. No account needed; in Petuko an account is optional, only to sync your progress.
Why a dark bulb?
Eindhoven isn’t called the City of Light for nothing. Still, we like to work in the dark, because that’s where we come up with the light.
The click is all yours.
We’re a small studio and we read everything. Questions, feedback and puzzle ideas are all welcome.
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