Happy Brain Games

Happy Brain Games is a small independent studio making free daily puzzle games with no ads, ever. One account works across every game we make.

Our first game is Betty Bee Sudoku: a fresh grid every day at five difficulty levels, global leaderboards, friend rivalries, achievements and streaks. It plays in any browser with no download and no sign-up required.

Frequently asked questions

Is Happy Brain Games free to play?
Yes. Betty Bee Sudoku gives you a fresh puzzle every day at no cost, and there are no ads anywhere in it. An optional subscription adds unlimited puzzles and extra features, but the daily game stays free.
Do I need an account to play?
No. You can start playing in your browser straight away with no sign-up. Creating a free account saves your streak, achievements and leaderboard placing, and syncs them across your devices.
What games does Happy Brain Games make?
Betty Bee Sudoku is our first game: classic Sudoku at five difficulty levels, plus Sudoku X, the variant where the two diagonals must also contain one to nine. One account works across every game we make.
Are there ads?
No ads, ever. That is a design rule for the studio, not a limited-time offer, and it applies to the free tier as much as the paid one.
Can I play on my phone?
Yes. The games run in any modern mobile browser and can be installed to your home screen to play offline. Native iOS and Android apps are in progress.
How much does a subscription cost?
Betty Bee Sudoku is $3.99 a month, $19.99 for six months, or $29.99 a year in US dollars. Family plans cover three players and are $9.99 a month, $49.99 for six months, or $79.99 a year. The daily puzzle stays free without any subscription.

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