Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Nonogram: The clues outside the grid indicate the lengths of all segments of shaded cells in the given row or column. Different segments in the same row or column must be separated by at least one unshaded cell. Every pair of orthogonally adjacent shaded cells must have a difference of at least 4.

Play it online in SudokuPad: https://sudokupad.app/uokg6se0mw

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Thermometers: Along thermometers, digits must increase from the bulb.

Play it online in SudokuPad: https://sudokupad.app/49vqfvsfx1

You can also play the original, harder version here (the solution is the same): https://sudokupad.app/o7e26cq18a

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Kropki: Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.

Play it online in SudokuPad: https://sudokupad.app/fh6gst3b14

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Skyscrapers: Each digit in the grid represents the height of a building in its cell, and taller buildings obstruct the view of shorter ones behind them: clues outside the grid give the number of buildings visible from that vantage point in the clue's row or column.
• Sandwich Sums: A circled clue indicates the sum of the digits between 1 and 9 in the indicated row or column. Circled clues are also Skyscraper clues.

Play it online in SudokuPad.

Enjoy! :D

Rules:

• 6x6 Sudoku: Every row, column and 2x3 box must contain every number from 1 to 6.
• Killer Cages: No digit may appear more than once within a cage.
• Thermometers: Along thermometers, digits must increase from the bulb.

Play it online in SudokuPad: https://sudokupad.app/kpv31pcz89

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Renban: All digits along a purple line must form a consecutive sequence (in no specific order).
• Arrows: Numbers along an arrow sum up to the total in the circled cell.
• Kropki: Two digits separated by a black dot have a 1:2 ratio.

Play it online in SudokuPad.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Thermometers: Along thermometers, digits must increase from the bulb.
• Kropki: Two digits separated by a white dot are consecutive.

Play it online in SudokuPad.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Entropic Lines: Every sequential group of 3 cells on a line must have a low digit {1,2,3}, a medium digit {4,5,6}, and a high digit {7,8,9}.
• Arrows: Numbers along an arrow sum up to the total in the circled cells; the circled value is read left to right or top to down if composed by multiple digits.
• Greater/Less: If two digits are separated by a "⁠<⁠", the smaller one in on the side where the "⁠<⁠" points to.
• Even: A digit inside a grey square must be even.

Play it online in SudokuPad.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Region Sum Lines: Box borders divide a blue line into multiple segments which have the same sum. Different lines may have different sums.
• Arrows: Numbers along an arrow sum up to the total in the circled cell.
• Kropki: Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
• V: Two digits separated by a V clue sum up to 5. If a clue is on the outer border, it applies to the digits at the two ends of that row/column.

Play it online in SudokuPad.

Play it online in sudoku.coach.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Mysterious Kropki: Two digits separated by a grey dot are either consecutive or have a 1:2 ratio, or both. All dots are given.

Play it online in SudokuPad.

Slightly harder version here; only two digits removed, same solution.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Killer Cages: No digit may appear more than once within a cage.

Play it online in SudokuPad.

Enjoy! :D

Rules:

• Classic Sudoku: Every row, column and 3x3 box must contain every number from 1 to 9.
• Palindrome Lines: Digits along a grey line read the same backwards and forwards.
• Arrows: Numbers along an arrow sum up to the total in the circled cell.
• Kropki: Digits separated by a white dot are consecutive; digits separated by a black dot have a 1:2 ratio.

Play it online in SudokuPad.

Enjoy! :D

Rules:

>Normal Sudoku rules apply.
Region Sum Lines: Box borders divide a blue line into multiple segments which have the same sum. Different lines may have different sums.
Same Sum Cages: The sum of the digits inside an outlined cage must be identical across all such cages.
Kropki Dots: Two digits separated by a white dot are consecutive; two digits separated by a black dot have a 1:2 ratio.
X: Two digits separated by an X clue sum up to 10.
Even: A digit inside a grey square must be even.

You can play it here: https://sudokupad.app/6yitbosh1e

Enjoy! :D

Rules:

>Normal Sudoku rules apply.
German Whispers: Every two consecutive digits along a green line must have a difference of at least 5.
Kropki Dots: Digits separated by a white dot are consecutive; digits separated by a black dot have a 1:2 ratio; if two digits are separated by a black&white dot, one must be multiple of the other.
A dot placed at the corner intersection of four cells indicates that its condition applies to both diagonal pairs (top-left/bottom-right and top-right/bottom-left).

You can play it here: https://sudokupad.app/1wpohdm5fq

Enjoy! :D

Rules:

>Normal Sudoku rules apply.
Along thermometers, digits must increase from the bulb.

You can play it here: https://sudokupad.app/oe13yo12ui

Rules:

Normal sudoku rules apply.
Killer cages: Digits inside a cage must sum to the number in the corner.
Palindrome lines: Digits along a grey line read the same backwards and forwards.
Kropki: Digits separated by a white dot are consecutive; digits separate by a black dot have a 1:2 ratio.

You can play it here: https://sudokupad.app/svtnq0wfvk

https://sudokupad.app/cyfk2rn9bl

Despite looking similar, the actual Undertale/Deltarune font, "8BitOperator JVE", and the fan font "Determination Mono" show some differences, including:

• Some punctuation characters are misaligned;
• the minus sign is shorter than it should be;
• the underscore is longer than it should be;
• the question mark is notably different;
• the capital W is slightly different.

This is quite ironic, considering how the page of Determination font claims to be "the Better Undertale Font".

Stop using it if you want to be faithful to the game, use 8BitOperator JVE instead, the actual font.

If you need the monospaced version, you can use this: https://drive.google.com/file/d/15PvcG3PPAVDQ7Nk9jiKsocaq522y1Urq/view