when was tetris released

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was tetris released	0.81	0.5	7682	67	24
when	1.06	0.5	7461	76	4
was	0.79	1	7360	42	3
tetris	0.52	0.9	7531	62	6
released	0.33	0.1	9291	27	8

Keyword	CPC	PCC	Volume	Score
when was tetris released	1.24	0.6	7423	97
when was tetris released in the usa	1.01	0.4	9237	79
when was tetris released on the gameboy	1.91	0.3	5509	4
when was tetris first released	1.71	0.4	9864	96
when was the game tetris first released	0.15	0.5	5574	2
when was nes tetris released	0.96	0.4	9572	8
how much was tetris when released on gameboy	0.77	1	5685	76
when was the original tetris released	1.02	0.3	8281	23
when was tetris 99 released	1.27	0.8	3001	5
when was tetris was first available	0.83	0.1	1337	25
when was tetris made	0.12	1	8918	10
when did nintendo release tetris	0.33	0.4	6761	62
when did tetris come out game	0.08	0.4	9441	2
what year was tetris made	1.39	0.7	2512	69