SEIZA turns the Schulte table into a 30-second race you can play solo or multiplayer. Twenty-five numbers are scattered across the night sky. Tap them in order from 1, and your score is how many you get through before time runs out. Play solo and aim for the top-five leaderboard, or share a four-letter room code and race your friends on the same sky.
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Solo scores can make the top-five leaderboard. In a room, everyone gets an identical sky and starts at the same time.
Tap the numbers in the night sky in order, starting from 1. Each star you tap joins the line and shoots away, and a higher number takes its place. A wrong tap does not cost points, but your misses are counted.
A Schulte table is a grid of shuffled numbers that you find in order, starting from 1. The usual version is a 5×5 grid of 1 to 25, and you time how long it takes to find them all. SEIZA starts the same way, with the numbers 1 to 25. The difference is that each number you tap is replaced by a higher one, so the sky never empties. Instead of timing a full grid, you count how many you get through in 30 seconds.

Numbered stars appear scattered across the night sky. Next star at the top shows which number to tap.
The sky at the start
Tap the stars in order from 1 and a line joins them up. Each star you connect shoots away and a higher number appears in its place.
Connecting the stars
Your score is how many stars you connect in 30 seconds. Enter a name to put it on the leaderboard.
The resultOpen the game and create a room. You get a four-letter room code.
Your friends open the same game on their own phones and type in the code. You can also send the invite link, which takes them straight into the room.
When everyone is in, the host starts the game. The rules come up on screen first, and the clock does not start until everyone has tapped “Got it”.
It starts the same, with 1 to 25 to find in order. Each number you tap is replaced by a higher one, so you count how many you get through in 30 seconds instead of timing a full grid.
Yes. Create a room and you get a four-letter code. Up to six players play on the same sky at the same time, and whoever connects the most stars wins.
No points are taken off, but misses are counted. A wrong tap mostly costs you your rhythm, so look before you tap.
Thirty seconds, so it is easy to play several rounds in a row.
It is free, with no sign-up and nothing to install. It is built for phones and also runs in a tablet or computer browser.