World Tetris Day is observed every year on June 6 to honor the creation of one of the most recognizable and enduring puzzle games of all time: Tetris.
The game was invented in 1984 by Alexey Pajitnov, a computer engineer working at the Academy of Sciences in Moscow. He developed the first version of Tetris on an Electronika 60 computer, using simple blocks to create a game that was easy to learn but challenging to master.
The name “Tetris” combines the Greek prefix tetra (meaning “four,” since all pieces are made of four squares) and Pajitnov’s favorite sport, tennis. Its elegant simplicity and addictive gameplay helped it spread rapidly across the globe. Tetris became a key part of video game history and even played a role in the Game Boy’s worldwide success when it launched with the console in 1989.
The Tetris Company, formed in 1996, officially celebrates the game’s birthday on June 6 each year. On this day, fans and retro game lovers reflect on its cultural impact and ongoing popularity. Over the decades, Tetris has been reimagined on countless platforms—from arcade machines to mobile apps—yet the core gameplay has stayed the same.
When Is World Tetris Day?
June 6th isn’t just another day on the calendar—it’s World Tetris Day, a time to celebrate the game that’s been stacking up wins since 1984. Why June 6th, you ask? It’s the day Alexey Pajitnov first shared his ingenious creation with the world, setting off a chain reaction of falling blocks and rising scores. To help you plan your Tetris marathons, here are the dates, including weekdays, for World Tetris Day:
| Year | Date and Weekday |
|---|---|
| 2025 | June 6, Friday |
| 2026 | June 6, Saturday |
| 2027 | June 6, Sunday |
| 2028 | June 6, Tuesday |
| 2029 | June 6, Wednesday |
| 2030 | June 6, Thursday |
Fun Facts About Tetris
Here are a few interesting things to know as you celebrate World Tetris Day:
- Tetris was never meant to be sold. Pajitnov originally shared the game for free within the USSR, and it spread on floppy disks before being licensed abroad.
- The “Tetris Effect” is real. People often report seeing falling Tetriminos in their mind’s eye after extended play—this is now a well-documented phenomenon.
- It inspired scientific research. Studies have shown Tetris can reduce flashbacks in PTSD patients and improve mental rotation skills.
- It holds a Guinness World Record. Tetris was named the most ported video game of all time.
- It has its own theme song. The famous Tetris theme is based on the Russian folk song Korobeiniki.
How to Celebrate World Tetris Day
Looking to join in? Here are a few simple ways to mark the occasion:
- Play a few rounds of your favorite version of Tetris—classic or modern.
- Watch a Tetris documentary, like The Tetris Effect or the 2023 biopic Tetris.
- Share your high score on social media using the hashtag #WorldTetrisDay.
- Read about the game’s history to understand its unique journey from a Soviet lab to global fame.
- Host a friendly Tetris competition with friends, family, or coworkers.
A Historical Timeline of Tetris
Tetris has a rich history that spans over three decades. Here’s a quick look at how the game has evolved:
- 1984: Tetris is developed by Alexey Pajitnov, a Soviet software engineer, while working at the Dorodnitsyn Computing Centre of the Soviet Academy of Sciences.
- 1989: The game gains worldwide popularity after being bundled with the Game Boy, Nintendo’s handheld gaming device.
- 1996: Tetris becomes one of the first games to be adapted for mobile phones, marking the beginning of its transition into a digital era.
- 2007: The Tetris Company and Blue Planet Software introduce official Tetris games for smartphones, further cementing its place in the digital gaming landscape.
- 2020: Tetris Effect, a VR version of the game, is released, bringing the classic gameplay into the immersive world of virtual reality.
- 2023: On December 21, 2023, Willis Gibson, also known as Blue Scuti, made Tetris history by becoming the first person to “beat” the game. He reached the previously-unattainable level 157, triggering a killscreen that caused the game to crash—a feat never before achieved!
Before You Go:
We have many more national days lists for you to explore.
- Food-related national days: complete list of national food days, pasta & noodles days, vegan & vegetarian days, mushroom days, ice-cream days, pizza days, coffee days, chocolate days, wine days, alcohol & drinking days.
- Non-food national days: National Days Calendar 2025 (check out the printable calendars in my Etsy shop), National Days for Teachers, and a wide array of special lists such as cat days, dog days, animal days, cleaning & organizing days, book days, music days, family & relationships days, national days for women, stationery days and even Harry Potter days.
- Country-specific national days: Australian national days, more coming soon.
📝 This article was originally published on August 11th, 2024. It has been thoroughly updated, and the publishing date has been changed to reflect the new version.
