Play Sand Block Blast — a free browser block-puzzle playable online with no download. Drop sand-shaped blocks, watch them turn to grains, and clear lines in a relaxing but strategic web game. Perfect for quick breaks, classrooms, and unblocked game lists. No install or registration; mobile-ready, ad-moderated, and cool-math-friendly. Play online free now. Sand Block Blast, free online puzzle game, block puzzle, sand game, online game, no download, kids game, puzzle game, brain teaser, relaxing game, strategic game, mobile game, unblocked game, cool-math, 1 player, color, blast, kids friendly, no blood