Michael Jordan had the most games by a player 30 or older with 43+ points, with 28 games.

Interpreted as:

most 43+ point regular-season games after turning 30 years old by a player

	NAME	GP	PTS	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	REB	AST	STL	BLK	TOV	PF	+/-
1	Michael Jordan M. Jordan	28	1,303	40.4	46.5	5.9	3.6	2.4	0.4	17.3	29.9	57.9	1.3	3.0	44.6	10.6	12.2	86.8	65.9	1.3	4.6	2.4	1,131	164	101	67	12	66	63	+146
2	Stephen Curry S. Curry	20	1,011	36.7	50.6	5.7	5.2	1.1	0.5	16.3	28.4	57.4	9.5	17.4	54.5	8.5	9.0	95.0	78.2	0.5	5.3	3.2	734	114	103	22	9	64	36	+205
3	James Harden J. Harden	18	872	39.1	48.4	7.3	7.8	1.9	0.9	14.6	27.5	52.9	6.7	14.3	46.5	12.7	14.6	87.0	71.4	1.1	6.2	4.4	704	132	140	35	16	80	54	+215
4	Damian Lillard D. Lillard	14	694	39.1	49.6	4.5	8.6	1.1	0.1	15.0	26.0	57.7	7.5	14.8	50.7	12.1	12.6	96.0	78.6	0.5	4.0	2.9	547	63	121	16	2	40	22	+93
5	Larry Bird L. Bird	14	643	43.9	45.9	10.5	7.6	1.9	1.0	18.1	29.8	60.7	1.1	3.3	34.8	8.6	9.4	92.4	67.7	1.7	8.8	2.9	615	147	106	27	14	40	27
6	LeBron James L. James	13	619	37.6	47.6	9.6	6.9	1.4	1.2	17.5	27.2	64.3	4.9	8.6	57.1	7.8	9.8	79.5	75.7	1.4	8.2	3.1	489	125	90	18	16	40	15	+126
7	Alex English A. English	13	592	40.4	45.5	4.5	5.3	0.8	0.5	18.6	29.6	62.9	0.0	0.0		8.3	9.3	89.3	67.5	1.9	2.6	2.5	525	59	69	11	7	32	41
8	Kevin Durant K. Durant	12	566	40.0	47.2	7.3	6.3	1.2	1.2	16.4	28.2	58.3	4.3	9.1	47.7	10.0	10.8	92.3	71.6	0.8	6.5	4.7	480	88	75	14	14	56	37	+46
9	Rick Barry R. Barry	12	564	42.4	47.0	6.6	6.3	2.2	0.4	18.3	34.6	53.0				10.3	10.9	94.7	59.7	1.0	5.6	3.5	509	79	76	26	5	14	36
10	Allen Iverson A. Iverson	11	511	44.9	46.5	3.8	8.5	1.8	0.3	15.8	29.1	54.4	1.1	3.8	28.6	13.7	15.8	86.8	64.4	0.7	3.1	3.6	494	42	94	20	3	40	27	+37
11	Dominique Wilkins D. Wilkins	11	493	41.0	44.8	7.5	3.6	1.1	0.4	16.2	26.5	61.0	2.6	4.2	63.0	9.8	11.2	87.8	71.2	3.0	4.5	3.1	451	83	40	12	4	34	22
12	Bernard King B. King	11	511	42.0	46.5	7.3	4.5	1.9	0.4	17.6	31.3	56.4	0.2	0.9	20.0	11.0	13.5	81.8	62.5	2.5	4.7	3.8	462	80	50	21	4	42	31
13	Wilt Chamberlain W. Chamberlain	10	543		54.3	28.3				22.9	30.4	75.3				8.5	19.3	44.0	69.8					283					21
14	Kobe Bryant K. Bryant	8	397	39.9	49.6	5.0	4.3	1.1	0.9	16.9	33.3	50.8	2.8	8.6	31.9	13.1	14.8	89.0	62.4	0.8	4.3	1.8	319	40	34	9	7	14	19	+16
15	Hakeem Olajuwon H. Olajuwon	8	370	43.9	46.3	13.0	3.5	1.8	2.9	17.8	30.1	58.9	0.1	0.3	50.0	10.6	12.6	84.2	64.8	3.6	9.4	3.6	351	104	28	14	23	29	26	+21
16	George Gervin G. Gervin	8	358	42.3	44.8	6.3	3.4	1.0	1.4	16.8	30.1	55.6	0.1	0.5	25.0	11.1	13.0	85.6	62.4			2.9	338	50	27	8	11	23	25
17	Jerry West J. West	7	308		44.0					16.9	26.4	63.8				10.3	12.7	80.9	68.7										11
18	Elgin Baylor E. Baylor	7	314		44.9	13.0	4.6			17.1	32.6	52.6				10.6	12.4	85.1	59.0					91	32				26
19	Kyrie Irving K. Irving	6	272	40.1	45.3	5.2	5.5	1.8	0.5	16.0	25.8	61.9	5.7	10.7	53.1	7.7	8.5	90.2	76.6	0.7	4.5	2.7	241	31	33	11	3	16	14	+25
20	DeMar DeRozan D. DeRozan	6	280	43.7	46.7	7.2	4.8	2.2	0.5	15.7	26.7	58.8	1.2	3.8	30.4	14.2	15.8	89.5	69.4	0.7	6.5	1.8	262	43	29	13	3	11	18	+46
21	Karl Malone K. Malone	5	243	41.8	48.6	12.4	4.2	1.2	1.4	17.6	28.0	62.9	0.2	0.2	100.0	13.2	16.4	80.5	69.0	3.8	8.6	3.0	209	62	21	6	7	15	20	+20
22	Elvin Hayes E. Hayes	4	179	47.0	44.8	13.3	1.5			18.3	26.5	68.9	0.0			8.3	12.3	67.3	70.2				188	53	6				17
23	Gail Goodrich G. Goodrich	4	190	43.8	47.5	4.3	6.3	2.5		18.0	30.8	58.5				11.5	12.8	90.2	65.3				175	17	25	10			14
24	Bob Love B. Love	4	185	44.0	46.3	10.0	2.3	1.0		17.0	29.5	57.6				12.3	14.3	86.0	64.6	5.0	5.0		176	40	9	1			12
25	Cliff Hagan C. Hagan	4	188	43.8	47.0	10.0				17.5	32.8	53.4				12.0	13.8	87.3	60.6				175	40					16