Sufuku vs NOCTURNE ISLAND

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Sufuku compared with NOCTURNE ISLAND
Detail	Sufuku	NOCTURNE ISLAND
What it does	A daily logic puzzle where each number repeats as many times as its value	Four free daily puzzle games in your browser
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Free
Pricing	Not given	Not given
Key features	6×6 board with rows, columns and regions Each number appears as many times as its value One solution per puzzle Gold clue numbers New puzzle daily at 2:00 AM	RANGE estimation trivia TANDEM route logic CARGO packing BLOOM water logic New puzzles every day Everyone gets the same puzzles Leaderboard rankings Email and social sign-in Single-player gameplay
What makes it different	Pure deduction with no guessing required Progressive difficulty throughout the week Constraint-based puzzle mechanics where numbers repeat by value	All players receive the same daily puzzles Four distinct puzzle game types No payment required Plays in any web browser
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 +1 (up) since last check	2 +2 (up) since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	23	0
Referring domains (Majestic)	27	0

3 details filled in for both companies.