Michael Jordan had the most games by a player 30 or older with 40+ points, with 44 games.

Interpreted as:

most 40 or more points regular-season game by a player after turning 30 years old

	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	44	1,951	40.8	44.3	6.3	3.8	2.3	0.6	16.6	29.4	56.5	1.1	2.7	41.7	10.0	11.8	84.8	64.1	1.6	4.6	2.2	1,794	276	168	102	25	96	100	+232
2	Stephen Curry S. Curry	41	1,870	35.9	45.6	5.4	5.1	1.0	0.3	14.9	25.9	57.6	8.9	16.2	54.7	6.9	7.4	93.1	78.2	0.6	4.9	3.4	1,472	222	209	42	13	138	82	+425
3	Damian Lillard D. Lillard	31	1,388	38.9	44.8	4.6	7.4	1.1	0.3	13.5	24.1	56.0	6.5	13.5	47.9	11.3	12.1	93.9	76.2	0.5	4.1	2.8	1,207	144	228	34	9	86	55	+193
4	Kobe Bryant K. Bryant	30	1,296	40.9	43.2	5.9	4.4	1.5	0.5	15.2	29.0	52.4	2.4	6.0	40.2	10.4	12.1	86.0	62.9	1.2	4.7	3.4	1,226	176	132	46	14	103	72	+99
5	James Harden J. Harden	28	1,279	38.6	45.7	7.3	8.2	1.7	0.9	13.3	26.8	49.5	6.1	14.4	42.8	13.0	14.7	88.3	68.6	1.2	6.1	4.3	1,081	204	230	48	26	119	87	+360
6	Larry Bird L. Bird	27	1,171	43.2	43.4	10.5	6.9	2.0	0.9	17.0	28.0	60.7	1.5	3.6	41.7	7.9	8.4	93.4	68.4	1.7	8.7	3.0	1,167	283	185	53	24	81	58
7	LeBron James L. James	25	1,108	38.3	44.3	9.6	7.1	1.4	1.0	16.2	26.1	62.0	4.8	8.5	55.9	7.2	9.2	78.4	73.5	1.6	8.0	3.7	958	241	177	34	25	93	35	+232
8	Alex English A. English	25	1,086	41.1	43.4	5.4	5.2	1.0	0.4	17.4	27.7	62.8	0.0	0.0	0.0	8.6	9.8	88.2	67.8	2.2	3.1	3.0	1,028	134	130	26	11	75	79
9	Rick Barry R. Barry	24	1,056	41.6	44.0	6.0	6.3	2.9	0.6	18.3	33.7	54.3				7.4	8.0	93.2	59.2	1.1	4.9	3.2	998	145	150	69	15	19	69
10	Kevin Durant K. Durant	21	937	39.2	44.6	7.0	5.8	1.0	1.2	16.2	27.5	59.1	4.0	8.1	49.7	8.1	8.7	93.4	71.3	0.7	6.4	4.1	824	148	122	22	25	87	52	+126
11	Hakeem Olajuwon H. Olajuwon	21	905	43.2	43.1	12.0	3.8	1.7	2.8	16.5	27.8	59.3	0.1	0.4	25.0	10.0	12.3	81.5	64.9	2.8	9.2	3.4	907	252	80	36	59	72	67	+18
12	Allen Iverson A. Iverson	20	879	45.3	44.0	4.2	8.8	1.8	0.2	15.4	29.0	53.1	1.2	3.6	31.9	12.0	14.0	86.0	62.5	0.6	3.6	3.6	905	84	176	36	3	71	43	+103
13	George Gervin G. Gervin	20	850	40.0	42.5	5.2	3.2	1.1	1.0	16.5	27.9	59.2	0.1	0.4	28.6	9.4	11.1	84.7	64.9			3.1	800	103	63	21	20	61	61
14	Jerry West J. West	20	841		42.1					15.7	27.0	58.0				10.8	12.9	83.3	64.3										46
15	Dominique Wilkins D. Wilkins	19	822	41.1	43.3	8.4	3.2	1.2	0.5	15.4	26.5	58.1	2.2	3.9	55.4	10.4	12.0	86.4	68.1	3.7	4.7	2.9	781	159	61	22	9	55	30
16	Elgin Baylor E. Baylor	16	680		42.5	14.6				16.5	31.1	53.1				9.5	11.4	83.1	58.9					234					53
17	Karl Malone K. Malone	15	651	41.5	43.4	10.5	3.7	1.8	1.2	15.8	25.1	62.9	0.1	0.1	50.0	11.7	14.7	79.6	68.6	2.3	8.3	3.4	622	158	56	27	18	51	53	+103
18	Wilt Chamberlain W. Chamberlain	14	709		50.6	27.0				21.4	28.3	75.5				7.9	17.6	44.9	70.2					378					27
19	DeMar DeRozan D. DeRozan	13	567	41.6	43.6	5.9	5.1	1.4	0.4	15.5	26.0	59.5	1.2	3.0	38.5	11.5	12.8	89.8	68.9	0.8	5.2	2.1	540	77	66	18	5	27	36	+89
20	Bernard King B. King	13	593	42.1	45.6	6.8	4.5	1.7	0.4	17.5	31.2	56.3	0.2	0.8	27.3	10.3	12.5	82.2	62.2	2.4	4.5	3.9	547	89	59	22	5	51	41
21	Kyrie Irving K. Irving	12	519	40.6	43.3	5.2	5.2	1.8	0.7	15.2	25.7	59.1	5.4	10.4	52.0	7.5	8.3	90.0	73.7	0.6	4.6	2.8	487	62	62	21	8	33	27	+66
22	Russell Westbrook R. Westbrook	12	502	39.4	41.8	10.3	7.6	1.4	0.4	16.0	29.2	54.9	3.3	7.3	44.3	6.6	8.8	75.2	63.4	1.8	8.5	5.7	473	124	91	17	5	68	46	+3
23	Dirk Nowitzki D. Nowitzki	12	498	41.1	41.5	9.3	2.3	0.9	1.1	14.0	25.9	54.0	2.1	4.4	47.2	11.4	12.3	93.2	66.3	1.7	7.7	2.1	493	112	27	11	13	25	31	+86
24	Kareem Abdul-Jabbar K. Abdul-Jabbar	10	417	42.8	41.7	12.4	4.1		2.9	16.2	26.8	60.4	0.0	0.0		9.3	11.9	78.2	65.1				428	124	41		29		31
25	Shaquille O'Neal S. O'Neal	9	376	39.2	41.8	11.9	2.7	0.8	2.3	15.9	22.8	69.8	0.0	0.0		10.0	16.6	60.4	69.5	3.8	8.1	2.6	353	107	24	7	21	23	29	+135