Tetrads.io is an addictive retro Tetris style IO combat game, where you must protect your core body by strategically collecting block pieces. Gather block pieces for protection, or shape into usable weapons and ram your enemies and strike their core. Defeated enemies will drop random pieces. As you gain mass, your mobile fortress of blocks with gradually slow down, and your boost will also recover more slowly. Smaller characters can have a strategic advantage by carefully shaping their body and using their speed and nimbleness to their advantage. Controls: Mouse to move. Click for temporary speed boost.