Logic Islands is a free online logic puzzle game where you fill grids by creating numbered islands of exact sizes while keeping all wall tiles connected into one continuous group. Inspired by the classic Nurikabe puzzle format and Islands of Insight, every move counts — place a tile wrong and the whole solution falls apart. The core challenge sounds simple but gets genuinely tricky fast.

The game spans 6 distinct worlds, each introducing mechanics that shake up how you think. Classic Nurikabe rules lay the foundation, then things get interesting with Yin-Yang connectivity rules, ice blocks that slide, one-way arrows that restrict movement, and special orbs that change how islands form. With 240 hand-picked puzzles total, difficulty scales steadily so you're never thrown in the deep end without warning. Each world feels like a fresh puzzle set rather than just harder versions of the same thing.

If you enjoy brain-teaser games, grid logic puzzles, or nonogram-style challenges, Logic Islands will keep you busy for hours. It's a solid pick for fans of Nurikabe online, Minesweeper logic variants, or anyone searching for free 2D board puzzle games with no download required. The single-player format makes it perfect for focused solo sessions when you want a real mental workout without flashy distractions.