The following are known Action Replay Codes for Shenmue on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

LOTS OF ITEMS A
459AD14B
01010100
72651D80
01010101
CA0B297A
00000101
E867D616
00000001
465AD14B
01000101
71A51D80
01000100
C9CB297A
01000100
1EC4D813
01000100
6A2BA5C3
01000100

LOTS OF ITEMS B
9628C475
01010101
E817D616
01010101
2847ADC7
01010101
71151D80
01010101
A8F39F13
01010101
F8395804
01010101
468AD14B
01010101
9698C475
00010101

YEN (LOTS OF CASH)
FA299800
000186A0

ALL CASSETTES A
F4399807
00000100
3BE92AC6
00000200
4A8A1148
00000300
7D4DDD83
00000400
9A980476
00000500
C523E979
00000600

ALL CASSETTES B
C51BE979
00000700
F4619807
00000800
24376DC4
00000900
527F79D6
00000A00
3A512AC6
00000B00
677365C0
00000C00
8E438381

All Collections
F038D807
E06B1041
24943CAD
1484509E

Infinite Money
FA299800
00000345