Stephen Curry has the most games by a player 30 or older with 50+ points, with 8 games.

Interpreted as:

most 50 or more point regular-season games after turning 30 years old by a player

NAME	GP	PTS	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	REB	AST	STL	BLK	TOV	PF	+/-
Stephen Curry	8	433	36.5	54.1	5.1	5.3	0.9	0.5	3.0	17.4	29.0	59.9	9.3	17.0	54.4	10.1	10.6	95.3	292	41	42	7	4	24	11	+67
Wilt Chamberlain	7	410		58.6	30.6					24.7	32.3	76.5				9.1	20.6	44.4		214					11
Damian Lillard	6	343	40.1	57.2	4.8	7.0	1.2	0.0	3.3	17.5	29.2	60.0	7.7	15.3	50.0	14.5	15.2	95.6	241	29	42	7	0	20	8	+53
Michael Jordan	6	312	40.2	52.0	6.8	2.8	2.5	0.3	2.0	20.0	33.5	59.7	2.2	4.0	54.2	9.8	10.8	90.8	241	41	17	15	2	12	14	+40
James Harden	5	278	38.8	55.6	4.6	7.6	2.4	1.2	4.6	16.8	31.6	53.2	7.6	16.2	46.9	14.4	15.2	94.7	194	23	38	12	6	23	18	+84
Kevin Durant	4	210	42.4	52.5	7.8	6.8	1.0	0.5	3.8	18.0	31.8	56.7	5.3	10.0	52.5	11.3	12.5	90.0	170	31	27	4	2	15	13	+32
LeBron James	4	214	38.9	53.5	9.0	4.8	1.3	1.3	3.0	19.8	30.3	65.3	5.0	8.0	62.5	9.0	10.0	90.0	155	36	19	5	5	12	8	+61
Rick Barry	3	161	44.3	53.7	6.3	6.3	3.7	0.3	2.0	21.3	39.3	54.2				11.0	12.0	91.7	133	19	19	11	1	4	7
Kobe Bryant	2	121	39.5	60.5	2.0	3.5	0.5	1.0	2.0	20.5	40.5	50.6	4.5	13.5	33.3	15.0	16.0	93.8	79	4	7	1	2	4	2	+26
Allen Iverson	2	104	46.3	52.0	4.0	6.5	1.5	0.0	2.5	17.5	29.0	60.3	0.0	1.0	0.0	17.0	19.5	87.2	93	8	13	3	0	5	4	-9
Allan Houston	2	103	43.5	51.5	3.0	3.0	1.0	0.0	0.0	15.5	27.0	57.4	5.0	9.5	52.6	15.5	16.5	93.9	87	6	6	2	0	0	6	+11
Karl Malone	2	107	43.5	53.5	11.5	2.5	1.0	2.0	2.5	18.5	28.5	64.9	0.5	0.5	100.0	16.0	19.5	82.1	87	23	5	2	4	5	7	+1
Bernard King	2	102	43.5	51.0	7.0	4.0	2.5	0.0	4.0	19.0	33.0	57.6	0.0	1.0	0.0	13.0	15.0	86.7	87	14	8	5	0	8	5
Tom Chambers	2	116	42.5	58.0	7.0	3.0	1.0	1.0	1.5	20.5	30.5	67.2	1.0	1.0	100.0	16.0	18.5	86.5	85	14	6	2	2	3	9
Alex English	2	105	44.0	52.5	3.5	5.0	1.0	0.0	2.0	22.5	32.5	69.2	0.0	0.0		7.5	8.0	93.8	88	7	10	2	0	4	8
Jrue Holiday	1	51	32.5	51.0	8.0	8.0	1.0	1.0	6.0	20.0	30.0	66.7	3.0	6.0	50.0	8.0	10.0	80.0	32	8	8	1	1	6	3	+26
Klay Thompson	1	54	45.9	54.0	8.0	3.0	0.0	1.0	3.0	21.0	39.0	53.8	10.0	21.0	47.6	2.0	2.0	100.0	46	8	3	0	1	3	4	+13
DeMar DeRozan	1	50	43.4	50.0	5.0	6.0	1.0	0.0	2.0	17.0	26.0	65.4	2.0	2.0	100.0	14.0	15.0	93.3	43	5	6	1	0	2	4	+19
Eric Gordon	1	50	38.3	50.0	6.0	3.0	2.0	1.0	2.0	14.0	22.0	63.6	6.0	11.0	54.5	16.0	20.0	80.0	38	6	3	2	1	2	0	+12
Jamal Crawford	1	51	38.1	51.0	5.0	5.0	1.0	1.0	4.0	18.0	30.0	60.0	7.0	13.0	53.8	8.0	9.0	88.9	38	5	5	1	1	4	4	-5
LaMarcus Aldridge	1	56	48.6	56.0	9.0	4.0	0.0	4.0	5.0	20.0	33.0	60.6	0.0	0.0		16.0	16.0	100.0	49	9	4	0	4	5	2	+7
Derrick Rose	1	50	40.9	50.0	4.0	6.0	1.0	1.0	6.0	19.0	31.0	61.3	4.0	7.0	57.1	8.0	11.0	72.7	41	4	6	1	1	6	4	+10
Lou Williams	1	50	35.1	50.0	2.0	7.0	0.0	0.0	4.0	16.0	27.0	59.3	8.0	16.0	50.0	10.0	10.0	100.0	35	2	7	0	0	4	0	+8
Mo Williams	1	52	43.8	52.0	4.0	7.0	0.0	0.0	3.0	19.0	33.0	57.6	6.0	11.0	54.5	8.0	9.0	88.9	44	4	7	0	0	3	2	+14
Andre Miller	1	52	42.2	52.0	5.0	2.0	2.0	0.0	2.0	22.0	31.0	71.0	1.0	1.0	100.0	7.0	8.0	87.5	42	5	2	2	0	2	2	+4