An ordinary sudoku, plus thermometers: digits get bigger along every thermometer, starting from its round bulb. Rows, columns and boxes still hold 1 to 6 exactly once.
About Fever
Fever is a free daily thermo sudoku from Mind Loft on a small 6×6 grid, in six boxes two squares tall and three wide. Every row, column and box holds 1 to 6 exactly once, and digits rise along every thermometer, from the round bulb to the far end.
It is the quick version of Mercury: the same idea in a few minutes. Every board has exactly one solution you can always reach by logic, with no guessing, and boards get harder through the week, with a harder Sunday Edition.
A new board drops every day at midnight Eastern. No app, no signup, play free in your browser. Want the full-size version? Try Mercury, or Sixes, the plain 6×6.
Fever, in short
How do you play Fever?
The 6x6 twin of Mercury: digits rise along every thermometer from the bulb. One logical solution, a new board every day.
Is Fever free to play?
Yes. Fever is free to play in your browser on Mind Loft, with no app to install and no account required.
When does a new Fever puzzle come out?
A new Fever arrives every day at midnight Eastern time, and Sundays bring the Sunday Edition, the biggest or hardest board of the week.
What kind of puzzle is Fever?
Fever is a daily sudoku from Mind Loft: mercury at 6x6. It is part of the daily sudoku lineup.
Can I play past Fever puzzles?
Yes. Every past Fever board is in the puzzle archive, a tap away by day.