Codoku

Codoku is a Sudoku-style puzzle game where every row, column, and box needs unique code tokens. Play a classic number grid first, then move from numbers to variables, types, operators, and if/else, one grid at a time. The game includes a skill map, optional 4x4 expression side quests, and a short run report when a grid compiles. The free game shows ads after levels, and a one-time purchase removes them. Codoku is practice for logic, constraints, and programming vocabulary, not a full programming language course.