Japsum vs OneWay

Japsum (short for "Japanese Sum") is a free, logic-based, combinatorial number-placement puzzle game. It’s similar to Kakuro or Sudoku puzzles, but with its own unique twist. Starting with an empty grid, you’ll use hints provided on the sides and top to place numbers or black boxes in the grid. The hints indicate the sums of consecutive numbers, with no black boxes in between. Multiple hints mean that sequences of numbers are divided by one or more black boxes. By using logical reasoning and interpreting these hints, you’ll make steady progress in filling in the grid with numbers and black boxes. Be prepared—especially with the larger grids, these puzzles can get very challenging! The app offers grid sizes ranging from 3x3 to 22x22—the largest puzzles of this kind, as far as I know. Every puzzle has exactly one unique solution, ensuring a fair and rewarding challenge. As you solve puzzles, your level increases, unlocking larger grids and fun bear avatars that you can choose to represent your progress. Best of all, Japsum is completely free—so you can dive into the world of Japanese Sum puzzles at no cost. Are you ready to test your logic and take on the ultimate puzzle challenge? Download Japsum today and start solving!

OneWay is a clean, satisfying puzzle game where your goal is simple: connect the entrance to the exit using tile pieces. Place tiles on the grid to build a continuous path from IN to OUT. Every tile must be used — no extras, no shortcuts. As you progress through 100 hand-crafted stages across 5 zones, new mechanics are introduced one by one: • CLASSIC — Learn the basics. Place tiles to form a clean path. • FAKE — Extra tiles are added to mislead you. Only the right ones form the path. • BRIDGE — Paths can cross. Figure out which tile goes over which. • PORTAL — Teleport between two points on the grid. The path continues on the other side. • MULTI-LINE — Two separate paths. Both must be completed at the same time. After clearing all 100 stages, Infinite Mode unlocks — endless puzzles with randomized zones and grid sizes. Simple rules. Deep thinking. OneWay.