Hi,
When you play a Romdata game the name of the game shown in the title bar is the name of the Driver (DrvName) instead of the Romdata one (FullName).
For instance, using this Romdata file for the Neogeo demo
Bad Dudes - Burger Edition (Demo):
ZipName: bd-AES-MVS-Demo-NeoGeo-rom
DrvName: doubled1
FullName: "Bad Dudes - Burger Edition (Demo)"
// Name Len Crc32 Type
"bdudes-p1.bin", 0x00100000, 0x77a74315, 0x01100001
"bdudes-p2.bin", 0x00700000, 0xf827dd6e, 0x01100001
"bdudes-s1.bin", 0x00020000, 0x83b0f6c4, 0x00200002
"bdudes-c1.bin", 0x01000000, 0xfe7bb928, 0x00200003
"bdudes-c2.bin", 0x01000000, 0x68deb392, 0x00200003
"bdudes-m1.bin", 0x00010000, 0x2854b516, 0x01100004
"bdudes-v1.bin", 0x00800000, 0xd8ac5857, 0x00400005
"bdudes-v2.bin", 0x00800000, 0xf37bd666, 0x00400005
The Driver used is doubled1 "Double Dragon One (Demo)". That's the name that is shown in the title bar instead of the Romdata FullName "Bad Dudes - Burger Edition (Demo)".
Thanks and best regards.