
Block Blast
Geometry Game

Updated Aug 15, 2025
Tetris, the legendary block-stacking puzzle game, is celebrating its 40th anniversary! Originally inspired by Pentominos, this *classic* HTML5 game offers endless hours of *brain-teasing* fun.
* Stack colorful blocks (Tetriminos – I, J, L, O, S, T, and Z shapes) into a 20x10 grid.
* Move blocks left/right with A/D or arrow keys.
* Drop blocks down with S or the down arrow.
* Rotate blocks with W or the upper arrow.
* When a line is completely filled, it disappears, earning you points!
This revamped version, available on OnlineGames.io, boasts a vibrant *neon theme* and is fully optimized for *mobile*, *tablet*, and *desktop* play – all *free*! Plus, it includes a *bonus score mechanism* with special tetriminoes.
Challenge your skills and become a Tetris master. Don’t miss out on this *timeless* classic! Try the HTML5 Tetris game now and see how high you can score. Discover more *arcade games* and *puzzle games* online!
Stay in rhythm, avoid rushing early sections, and watch obstacle patterns before committing to longer runs.
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