Dwight Howard has the most career games by a player younger than 24, with 427 games.

Interpreted as:

most regular-season games by NBA player before age 24

	NAME	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	Dwight Howard D. Howard	427	35.8	17.3	12.5	1.4	0.9	2.0	6.1	10.7	57.1	0.0	0.0	7.1	5.1	8.5	59.9	59.9	3.6	8.9	3.0	15,275	7,397	5,349	610	383	850	1,266	1,376	+1185
2	LeBron James L. James	421	40.8	27.3	6.9	6.6	1.8	0.8	9.9	21.0	47.0	1.3	4.0	32.1	6.3	8.7	73.2	55.1	1.3	5.6	3.3	17,180	11,514	2,896	2,764	753	346	1,378	870	+1189
3	Tracy McGrady T. McGrady	420	32.6	20.3	6.5	3.9	1.3	1.3	7.5	16.5	45.3	0.9	2.5	36.1	4.5	6.0	74.8	53.1	2.1	4.4	2.1	13,700	8,542	2,713	1,637	550	528	888	836	+482
4	Giannis Antetokounmpo G. Antetokounmpo	415	32.8	17.7	7.8	3.9	1.2	1.3	6.5	12.7	51.1	0.4	1.6	27.0	4.3	5.8	74.1	58.1	1.6	6.2	2.5	13,606	7,345	3,230	1,629	500	545	1,056	1,230	+84
5	Kobe Bryant K. Bryant	414	32.4	19.8	4.6	3.8	1.3	0.6	7.1	15.5	45.8	0.7	2.3	31.4	4.9	6.0	82.7	54.7	1.2	3.4	2.5	13,425	8,197	1,894	1,579	533	253	1,051	1,105	+1760
6	Josh Smith J. Smith	395	33.3	14.1	7.4	2.7	1.2	2.4	5.3	11.6	45.8	0.3	1.2	26.8	3.1	4.6	67.6	51.6	2.1	5.3	2.5	13,163	5,560	2,939	1,066	470	948	968	1,165	-634
7	Tony Parker T. Parker	394	33.2	15.0	3.1	5.4	1.0	0.1	5.9	12.4	47.9	0.7	2.1	31.5	2.5	3.6	69.9	53.8	0.5	2.6	2.5	13,068	5,914	1,209	2,128	402	26	992	816	+2039
8	Andre Drummond A. Drummond	385	29.7	13.3	12.8	0.7	1.2	1.5	5.8	10.5	54.8	0.0	0.0	26.3	1.8	4.7	38.1	53.0	4.6	8.2	1.5	11,438	5,120	4,945	277	476	580	594	1,184	-486
9	Anthony Edwards A. Edwards	381	34.8	23.9	5.3	4.2	1.3	0.6	8.4	18.8	44.6	2.9	8.0	36.4	4.2	5.2	80.4	56.6	0.7	4.6	2.9	13,263	9,097	2,017	1,600	504	233	1,099	770	+780
10	Eddy Curry E. Curry	381	24.1	12.4	5.2	0.5	0.3	0.8	4.7	8.8	53.6	0.0	0.0	100.0	3.0	4.6	65.0	57.4	1.8	3.5	2.1	9,189	4,725	1,988	198	113	319	788	1,175	-1235
11	Kevin Durant K. Durant	380	38.1	26.3	6.6	2.8	1.2	1.0	8.9	19.1	46.8	1.5	4.1	36.4	6.9	7.9	87.8	58.2	0.9	5.7	3.1	14,476	9,978	2,513	1,073	462	365	1,194	719	-81
12	Andrew Wiggins A. Wiggins	379	36.0	19.5	4.2	2.1	1.0	0.6	7.2	16.3	44.0	1.0	3.1	33.1	4.1	5.6	73.8	52.0	1.3	2.9	2.1	13,648	7,377	1,602	806	394	210	781	805	-369
13	Carmelo Anthony C. Anthony	379	36.5	24.4	6.0	3.0	1.1	0.5	8.8	19.0	46.2	0.6	2.2	29.4	6.2	7.8	79.6	54.5	2.0	4.0	3.1	13,836	9,264	2,280	1,145	428	175	1,176	1,139	+484
14	Enes Kanter Freedom E. Kanter Freedom	373	21.3	10.7	6.7	0.5	0.4	0.4	4.4	8.4	52.6	0.1	0.2	39.1	1.9	2.4	76.3	56.9	2.7	4.1	1.5	7,947	3,998	2,515	202	136	159	559	788	-408
15	Darius Miles D. Miles	372	27.3	10.3	5.2	2.0	0.9	1.2	4.3	9.0	47.3	0.1	0.3	16.5	1.7	2.8	59.4	50.0	1.4	3.8	2.1	10,146	3,828	1,951	750	331	436	772	891	-591
16	Derrick Favors D. Favors	367	25.0	10.9	7.2	1.0	0.7	1.3	4.3	8.4	51.2	0.0	0.0	8.3	2.2	3.4	66.0	54.8	2.5	4.7	1.5	9,179	3,987	2,627	360	269	494	559	1,084	-537
17	Kevin Garnett K. Garnett	367	36.9	17.7	9.1	3.6	1.4	1.8	7.4	15.1	48.9	0.1	0.4	31.9	2.7	3.7	74.0	52.8	2.7	6.5	2.4	13,533	6,496	3,350	1,332	528	653	880	969	+666
18	Bismack Biyombo B. Biyombo	366	21.2	4.6	6.5	0.3	0.3	1.6	1.7	3.4	50.7	0.0	0.0	0.0	1.2	2.1	55.9	53.5	2.1	4.4	0.9	7,765	1,693	2,378	115	92	576	316	829	-823
19	Darryl Dawkins D. Dawkins	366		11.0	6.7				4.6			0.0			1.8	2.8	65.9						4,037	2,464
20	Marvin Williams M. Williams	365	31.4	11.9	5.4	1.4	0.8	0.5	4.3	9.4	45.1	0.3	1.1	30.4	3.1	3.9	80.4	53.7	1.5	3.9	1.3	11,458	4,361	1,975	495	304	172	479	930	-200
21	Jermaine O'Neal J. O'Neal	364	21.4	8.9	6.0	0.7	0.3	1.5	3.5	7.4	47.3	0.0	0.1	4.2	1.9	3.0	62.1	50.9	1.9	4.1	1.3	7,784	3,229	2,202	272	126	547	478	864	+139
22	Thaddeus Young T. Young	361	28.2	12.6	5.0	1.1	1.1	0.3	5.3	10.5	50.8	0.3	1.0	33.7	1.6	2.1	72.6	54.8	1.9	3.1	1.3	10,170	4,534	1,798	397	408	113	462	721	+619
23	Maurice Harkless M. Harkless	356	23.3	7.4	3.7	0.9	1.0	0.6	3.0	6.3	47.1	0.6	1.9	31.5	0.9	1.5	59.6	53.3	1.3	2.4	0.9	8,278	2,646	1,326	310	351	226	330	688	-783
24	Andris Biedrins A. Biedrins	351	24.1	8.1	8.1	1.1	0.7	1.3	3.5	5.9	60.3	0.0	0.0	0.0	1.0	2.0	51.9	60.1	2.7	5.4	1.1	8,471	2,847	2,859	377	241	441	392	1,196	+100
25	Chris Bosh C. Bosh	350	36.9	18.8	9.0	2.1	0.8	1.3	6.6	13.5	48.7	0.1	0.2	29.3	5.6	7.0	79.0	56.5	2.6	6.4	2.2	12,904	6,577	3,150	720	273	445	754	946	+260