Fireflies app icon

a pongsixtyfour game

Fireflies

a little glow at the end of the day.

a calm light-up logic puzzle, set in a forest at night. place fireflies until every square glows, to a quiet night-forest soundtrack.

Download Fireflies on the App StoreDownload Fireflies on the App StoreGet Fireflies on Google Playfree to play.
A Fireflies board mid-solve: glowing fireflies lighting rows of purple squares between numbered trees

try a board

tap a square to place a firefly

three rules

  • spread the light. a firefly lights its whole row and column, until a tree gets in the way.
  • count the trees. a numbered tree has exactly that many fireflies right beside it.
  • keep your distance. two fireflies can never light each other.

in the app

  • endless play with no clock. boards keep coming, gentle at first and sharper as you improve.
  • hints that explain themselves. a hint shows where a firefly goes and says why.
  • a new daily puzzle, and a streak to keep.
  • four difficulties, from 7×7 up to 10×10.
  • three lives a board. a mistake is a soft flicker, not a buzzer.
  • every puzzle is on your phone, so it plays offline.

free to play, with ads between levels. one optional purchase removes those ads. hint and life packs are optional too.

how it looks on your phone

Light every cell and watch it glow - a 10×10 Fireflies board with glowing fireflies lighting rows and columns of purple squares
Solve it, watch them dance - fireflies drifting over the night sky after a solved level, above a Level 24 button
Hints that explain themselves - a hint card reading "This tree needs 3 fireflies touching it, and exactly 3 cells beside it are open, so each one gets a firefly"
A new puzzle every night - the daily puzzle, an 8×8 board with a timer and three lives
Unwind, one puzzle at a time - the Fireflies home screen with a daily challenge card, a 12 day streak and a Level 24 button

before you download

what does it cost?
nothing. it's supported by ads between levels. one optional purchase removes those ads, and you can restore it on a new phone. short videos for an extra hint, or to keep going after a mistake, are always your choice.
do i need an account?
no. there's nothing to sign in to.
what about my data?
ads come from Google AdMob, which collects some device data to show them, and you're asked for consent where the law requires it. the details are in the privacy policy and the terms.