PRIMEOUT / How to play

How to play

Open the interactive tutorial from the main menu. The written guide and language selection are in Settings. The rules below are the same in every language.

1 · Divide by primes

Tap a composite number card.
Then choose a prime tool below.
Example: 12 ÷ 2 = 6, then 6 ÷ 3 = 2.
A final prime in your tools is collected for you.
Tap a new prime to gain a crystal and tool.

A prime has exactly two positive divisors: 1 and itself. Reduce composite numbers step by step using your prime tools.

33 ÷ 3 = 11

If 11 is not in your tools, 33 ÷ 3 leaves 11 on its card. Tap 11 to add it as a new tool. A later division ending in 11 collects it automatically. Discovering a prime in your permanent collection does not automatically add it to a new round's tools.

2 · Three different rhythms

Flow: 75 seconds; collecting adds time.
Daily: 60 seconds, a date-based sequence.
Zen: no time limit and no lives spent.
Watch one rewarded ad for a new Zen session.
Resume the same Zen session without another ad.

3 · Lives and mistakes

A completed Flow/Daily round uses 1 life.
Up to 3 lives; 1 refills every 20 minutes.
Choose a rewarded ad to earn 1 life.
A wrong divisor freezes that card for 1 second.
Timed modes also deduct 2 seconds.

If an ad fails to load, retry or wait for lives to refill. Closing early gives no reward. An earned Zen entry is saved and consumed when a new Zen round begins.

4 · Your own universe

Collect all 25 primes in your collection.
New finds sparkle; larger primes gain richer color.
Your best 10 rounds per mode stay on your device.
Pausing stops the timer and crystals.
The tutorial is free; ads need internet.