The best alternatives to Pipe Cube are Blendix, Hardcore Tetris, and The Tetris Effect. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Match and blend the blocks of the same number and combine B-cubes for explosions and tap “Blendix” to open your way through the highest score! There are countless possibilities, and your talent in blending blocks will be the key.