Tetris has been called a perfect game, and it’s hard to argue – which means that subsequent Tetris releases, like Tetris Effect, have improved on perfection. The core game boils down to eight blocks, forever falling, clearing away if you’re paying attention and thinking ahead about placement. But Tetris is also, on some primal level, a way of life – try humming the Tetris tune next time you’re packing a suitcase and you’ll find that it genuinely helps.