when did tetris come out game

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did tetris come out game	0.08	0.8	2231	62	29
when	0.75	0.2	1408	77	4
did	1.62	0.5	3715	81	3
tetris	0.27	0.9	5060	15	6
come	1.64	0.6	3209	11	4
out	0.94	1	2211	53	3
game	1.14	0.1	4466	18	4

Keyword	CPC	PCC	Volume	Score
when did tetris come out game	1.55	0.7	795	68
when did tetris come out on gameboy	1.83	0.2	1735	53
when did nes tetris come out	1.73	0.9	6181	60
when was tetris first available	0.17	0.4	9859	76
when was tetris released in the usa	0.6	0.2	7006	86
year tetris game invented	1.35	0.4	6000	40
what was the first tetris game	0.76	0.4	4741	72
tetris game release date	0.85	0.4	6918	6
the original tetris game	0.79	0.9	6937	2
original tetris release date	1.44	0.4	8878	30
when did tetris come out	1.13	0.5	8658	60
when did tetris come out originally	0.16	0.6	9855	1