Wilt Chamberlain had the most games with 55+ points, with 72 games.

Interpreted as:

most 55 or more points regular-season game by a player 30 and older

	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	Wilt Chamberlain W. Chamberlain	72	4,381		60.8	26.2				24.8	43.9	56.5				11.2	18.4	60.9	58.5					1,885					119
2	James Harden J. Harden	12	697	39.3	58.1	6.6	7.3	2.5	0.8	17.7	31.8	55.6	7.3	15.5	47.3	15.4	16.9	91.1	74.1	1.5	5.1	4.4	472	79	87	30	9	53	34	+195
3	Kobe Bryant K. Bryant	9	558	42.0	62.0	5.0	3.0	1.6	0.3	20.9	38.0	55.0	5.2	11.0	47.5	15.0	16.6	90.6	68.5	1.2	3.8	2.2	378	45	27	14	3	20	25	+158
4	Michael Jordan M. Jordan	9	540	42.8	60.0	7.3	3.9	3.7	1.1	21.8	35.7	61.1	1.3	3.1	42.9	15.1	17.0	88.9	69.5	2.6	4.8	2.9	385	66	35	33	10	26	29
5	Damian Lillard D. Lillard	6	372	41.2	62.0	6.3	6.5	1.0	0.2	19.0	33.8	56.2	9.7	17.3	55.8	14.3	14.8	96.6	76.8	0.5	5.8	2.2	247	38	39	6	1	13	5	+76
6	Elgin Baylor E. Baylor	6	366		61.0	21.8				23.3	43.8	53.2				14.3	18.8	76.1	58.5					131					26
7	LeBron James L. James	5	285	42.1	57.0	8.6	5.6	1.0	0.6	19.6	32.6	60.1	6.0	9.6	62.5	11.8	14.2	83.1	73.4	2.6	6.0	3.8	211	43	28	5	3	19	7	+41
8	Rick Barry R. Barry	5	288	45.0	57.6	10.8	6.6	5.0	0.3	22.2	39.6	56.1				13.2	14.4	91.7	62.7	1.0	7.0	2.0	225	54	33	15	1	2	14
9	Stephen Curry S. Curry	4	235	37.3	58.8	4.3	4.0	0.8	0.3	18.8	31.3	60.0	10.3	19.3	53.2	11.0	11.3	97.8	81.1	0.5	3.8	3.5	149	17	16	3	1	14	4	+41
10	Devin Booker D. Booker	4	249	41.7	62.3	5.8	4.8	1.3	0.8	20.8	36.5	56.8	5.3	10.8	48.8	15.5	17.8	87.3	70.2	1.0	4.8	4.3	167	23	19	5	3	17	13	-7
11	Nikola Jokić N. Jokić	3	172	41.6	57.3	12.7	8.0	1.3	0.3	19.3	30.3	63.7	4.7	7.7	60.9	14.0	17.7	79.2	75.2	3.7	9.0	3.7	125	38	24	4	1	11	11	+29
12	Giannis Antetokounmpo G. Antetokounmpo	3	178	39.1	59.3	12.7	5.7	2.7	1.3	20.3	31.7	64.2	0.3	2.7	12.5	18.3	21.7	84.6	72.0	2.7	10.0	4.0	117	38	17	8	4	12	5	+61
13	Karl-Anthony Towns K. Towns	3	178	38.5	59.3	13.3	3.0	0.3	0.3	19.7	32.7	60.2	7.7	11.3	67.6	12.3	15.0	82.2	75.6	3.0	10.3	5.0	115	40	9	1	1	15	11	+23
14	Kyrie Irving K. Irving	3	172	40.0	57.3	4.3	4.7	3.3	0.3	19.0	33.0	57.6	8.7	12.7	68.4	10.7	11.0	97.0	75.8	1.7	2.7	2.0	120	13	14	10	1	6	6	+54
15	Jalen Brunson J. Brunson	2	116	43.7	58.0	3.5	7.5	0.5	0.0	21.5	39.0	55.1	4.0	12.0	33.3	11.0	11.5	95.7	65.8	0.5	3.0	2.0	87	7	15	1	0	4	3	+21
16	Luka Dončić L. Dončić	2	133	45.9	66.5	15.5	8.5	1.5	0.5	23.0	32.0	71.9	5.0	9.5	52.6	15.5	19.0	81.6	82.4	2.5	13.0	4.0	92	31	17	3	1	8	6	+20
17	Joel Embiid J. Embiid	2	129	36.7	64.5	14.5	6.5	1.0	4.0	21.5	34.5	62.3	1.0	3.5	28.6	20.5	23.5	87.2	71.9	5.0	9.5	3.0	73	29	13	2	8	6	5	+36
18	Bradley Beal B. Beal	2	115	39.6	57.5	4.5	4.0	0.5	0.0	19.5	34.0	57.4	7.5	11.5	65.2	11.0	12.5	88.0	72.8	2.5	2.0	6.5	79	9	8	1	0	13	7	-13
19	Russell Westbrook R. Westbrook	2	115	38.9	57.5	8.0	10.0	3.0	0.5	21.0	39.5	53.2	4.5	12.0	37.5	11.0	13.5	81.5	63.3	2.0	6.0	5.5	78	16	20	6	1	11	7	+15
20	Anthony Davis A. Davis	2	114	40.4	57.0	18.5	2.5	0.0	2.0	23.0	32.0	71.9	2.0	2.5	80.0	9.0	9.5	94.7	78.8	4.5	14.0	2.0	81	37	5	0	4	4	2	+34
21	DeMarcus Cousins D. Cousins	2	111	43.1	55.5	13.0	2.5	1.0	2.5	19.0	29.0	65.5	3.0	5.5	54.5	14.5	16.5	87.9	76.5	1.0	12.0	6.0	86	26	5	2	5	12	11	+18
22	Allen Iverson A. Iverson	2	118	46.0	59.0	3.0	6.0	3.5	0.5	19.0	39.0	48.7	2.0	4.0	50.0	19.0	20.5	92.7	61.4	0.5	2.5	4.5	92	6	12	7	1	9	3	+35
23	Tom Chambers T. Chambers	2	116	42.5	58.0	7.0	3.0	1.0	1.0	20.5	30.5	67.2	1.0	1.0	100.0	16.0	18.5	86.5	75.1	2.0	5.0	1.5	85	14	6	2	2	3	9
24	Karl Malone K. Malone	2	117	37.5	58.5	13.5	2.0	2.0	2.0	19.5	27.5	70.9	0.5	0.5	100.0	19.0	23.0	82.6	77.8	5.5	8.0	2.5	75	27	4	4	4	5	4	+1
25	Dominique Wilkins D. Wilkins	2	114	39.0	57.0	7.0	2.5	2.5	0.5	20.0	32.5	61.5	0.0	0.5	0.0	17.0	20.0	85.0	69.0	4.0	3.0	2.5	78	14	5	5	1	5	2