Tracking since Sep 25 — growth appears once we have a second daily reading.
Update history
1.7Sep 4, 2026 · seen Sep 25, 2026
Only the current version so far — new entries appear as the game ships updates.
Sum Mark is a pure and classic sudoku number logic puzzle game. Fill the blank grid cells with correct numbers following standard sudoku rules, ensuring every row, column and sub-grid contains unique digits. Multiple difficulty levels are available for beginners and advanced puzzle lovers. Featuring a clean minimalist interface, convenient number operation and thoughtful hint functions, it provides calm intellectual training. Effectively exercise logical reasoning and digital sensitivity for daily brain relaxation.
