Logic Arcade

New game: River Crossing. Ferry the wolf, the goat and the cabbage, then wolves, sheep, oxen and a sheepdog, across 40 levels.

Eight classic math and logic puzzles in one app. No ads. No accounts. Just puzzles.

GAMES INCLUDED:

• Water Jugs — Measure a target volume by filling, emptying, and pouring between jugs. Based on Bezout's identity and the Extended Euclidean Algorithm.

• Tower of Hanoi — Move stacked disks between rods without placing a larger disk on a smaller one. Includes the classic 3-rod puzzle and the 4-peg Frame-Stewart variant with a custom sandbox mode.

• Sliding Puzzle — Arrange numbered tiles in order on grids from 3x3 to 6x6. The original 15-puzzle, popularized in the 1880s.

• Lights Out — Toggle lights on a grid where each press flips neighboring lights. Rooted in linear algebra over GF(2).

• Knight's Tour — Guide a chess knight to visit every square exactly once. Studied by Euler, solved by Warnsdorff's heuristic.

• Egyptian Fractions — Decompose fractions into sums of distinct unit fractions. Features authentic hieroglyphic numeral display.

• Turntables — Rotate interlocking rings to arrange colored tokens. A physical model of permutation groups and Hungarian Rings.

• River Crossing — Ferry the wolf, the goat and the cabbage (and later wolves, sheep, oxen and a sheepdog) across the river without anyone getting eaten. Alcuin's 1,200-year-old puzzle and the missionaries-and-cannibals problem.

FEATURES:

• Up to 40+ hand-crafted campaign levels per game
• Chapter-based progression with increasing difficulty
• Auto-save and resume — pick up right where you left off
• "The Math" — brief explainers on the theorem behind each game
• Personal best tracking for moves and time
• Free Play / Random mode for 5 games + custom sandbox for Tower of Hanoi and Knight's Tour (Pro)
• Works completely offline
• No ads. No tracking. No data collected.

UNLOCK FULL GAME:

Chapter 1 of every game is completely free. Unlock the full game with a single one-time purchase to get chapters 2-4 across all 8 games, Free Play mode (with chapter 1 Random unlockable for free by beating the chapter), custom sandbox modes for Tower of Hanoi and Knight's Tour, and all future content.