diff --git a/src/mame/drivers/seibuspi.cpp b/src/mame/drivers/seibuspi.cpp
index 9089695d648..184f3063ec2 100644
--- a/src/mame/drivers/seibuspi.cpp
+++ b/src/mame/drivers/seibuspi.cpp
@@ -2770,6 +2770,38 @@ ROM_START( viprp1h )
 	ROM_LOAD("flash0_blank_region90.u1053", 0x000000, 0x100000, CRC(8da617a2) SHA1(29c6ee05ed1c9a428a89d625b72692296c38424b) )
 ROM_END
 
+ROM_START( viprp1t )
+	ROM_REGION32_LE( 0x200000, "maincpu", 0 ) /* i386 program */
+	ROM_LOAD32_BYTE("viper_prg0_010995.u0211", 0x000000, 0x80000, CRC(f998dcf7) SHA1(c2dc876e4dc51062caf3d0df7c3c9cc9a5201760) ) /* same code as viprp1s and viprp1h, different region byte value */
+	ROM_LOAD32_BYTE("viper_prg1_010995.u0212", 0x000001, 0x80000, CRC(9d4d3486) SHA1(ded6fa32b973046e50c40c40c446590b5f6d0b76) )
+	ROM_LOAD32_BYTE("viper_prg2_010995.u0210", 0x000002, 0x80000, CRC(d7ea460b) SHA1(aed10adacd073f7d2b35f12ba4b7876e5c99d142) )
+	ROM_LOAD32_BYTE("viper_prg3_010995.u029",  0x000003, 0x80000, CRC(ca6df094) SHA1(921eec141ce2d449047172fa9cdf39d459b5cc7b) )
+
+	ROM_REGION( 0x40000, "audiocpu", ROMREGION_ERASE00 ) /* 256K RAM, ROM from Z80 point-of-view */
+
+	ROM_REGION( 0x30000, "gfx1", ROMREGION_ERASEFF ) /* text layer roms */
+	ROM_LOAD24_WORD("viper_fix_010995.u0413", 0x000000, 0x20000, CRC(5ece677c) SHA1(b782cf3296f866f79fafa69ff719211c9d4026df) )
+	ROM_LOAD24_BYTE("viper_fixp_010995.u048", 0x000002, 0x10000, CRC(44844ef8) SHA1(bcbe24d2ffb64f9165ba4ab7de27f44b99b5ff5a) )
+
+	ROM_REGION( 0x600000, "gfx2", ROMREGION_ERASEFF ) /* background layer roms */
+	ROM_LOAD24_WORD("v_bg-11.415",  0x000000, 0x200000, CRC(6fc96736) SHA1(12df47d8af2c1febc1bce5bcf3218766447885bd) )
+	ROM_LOAD24_BYTE("v_bg-12.415",  0x000002, 0x100000, CRC(d3c7281c) SHA1(340bca1f31486609b3c34dd7830362a216ff648e) )
+	ROM_LOAD24_WORD("v_bg-21.410",  0x300000, 0x100000, CRC(d65b4318) SHA1(6522970d95ffa7fa2f32e0b5b4f0eb69e0286b36) )
+	ROM_LOAD24_BYTE("v_bg-22.416",  0x300002, 0x080000, CRC(24a0a23a) SHA1(0b0330717620e3f3274a25845d9edaf8023b9db2) )
+
+	ROM_REGION( 0xc00000, "gfx3", 0 ) /* sprites */
+	ROM_LOAD("v_obj-1.322",  0x000000, 0x400000, CRC(3be5b631) SHA1(fd1064428d28ca166a9267b968c0ba846cfed656) )
+	ROM_LOAD("v_obj-2.324",  0x400000, 0x400000, CRC(924153b4) SHA1(db5dadcfb4cd5e6efe9d995085936ce4f4eb4254) )
+	ROM_LOAD("v_obj-3.323",  0x800000, 0x400000, CRC(e9fb9062) SHA1(18e97b4c5cced2b529e6e72d8041c6f78fcec76e) )
+
+	ROM_REGION32_LE( 0xa00000, "sound01", ROMREGION_ERASE00 ) /* sound roms */
+	ROM_LOAD32_BYTE("v_pcm.215",  0x000000, 0x080000, CRC(e3111b60) SHA1(f7a7747f29c392876e43efcb4e6c0741454082f2) )
+	ROM_CONTINUE(                 0x400000, 0x080000 )
+
+	ROM_REGION( 0x100000, "soundflash1", 0 ) /* on SPI motherboard */
+	ROM_LOAD("flash0_blank_region80.u1053", 0x000000, 0x100000, CRC(e2adaff5) SHA1(9297afaf78209724515d8f78de8cee7bc7cb796b) )
+ROM_END
+
 ROM_START( viprp1hk )
 	ROM_REGION32_LE( 0x200000, "maincpu", 0 ) /* i386 program */
 	ROM_LOAD32_BYTE("seibu_1", 0x000000, 0x80000, CRC(283ba7b7) SHA1(28122e04b72f1163c69f3f845f6a493fdb6ed652) ) /* Old Version, "=HONG KONG=" seems part of title */
@@ -4045,6 +4077,7 @@ GAME( 1995, viprp1ua,   viprp1,   spi,     spi_3button, seibuspi_state, init_vip
 GAME( 1995, viprp1j,    viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1,   ROT270, "Seibu Kaihatsu",                         "Viper Phase 1 (New Version, Japan)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS )
 GAME( 1995, viprp1s,    viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1,   ROT270, "Seibu Kaihatsu",                         "Viper Phase 1 (New Version, Switzerland)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS ) // counterintuitively this seems to be the oldest set of the game despite playing with the 'new version' rules, it has various typos not present in other sets eg. 'UPDATEING'
 GAME( 1995, viprp1h,    viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1,   ROT270, "Seibu Kaihatsu",                         "Viper Phase 1 (New Version, Holland)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS ) // Code is the same as the above Switzerland set, just different region byte
+GAME( 1995, viprp1t,    viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1,   ROT270, "Seibu Kaihatsu (Tuning license)",        "Viper Phase 1 (New Version, Germany)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS ) // ^^
 
 GAME( 1995, viprp1ot,   viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1,   ROT270, "Seibu Kaihatsu (Tuning license)",        "Viper Phase 1 (Germany)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS )
 GAME( 1995, viprp1oj,   viprp1,   spi,     spi_3button, seibuspi_state, init_viprp1o,  ROT270, "Seibu Kaihatsu",                         "Viper Phase 1 (Japan)", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index c73581e7633..4448fafdf72 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -34338,6 +34338,7 @@ viprp1k                         // (c) 1995 Seibu Kaihatsu (Dream Island license
 viprp1oj                        // (c) 1995 Seibu Kaihatsu
 viprp1ot                        // (c) 1995 Seibu Kaihatsu (Tuning License)
 viprp1s                         // (c) 1995 Seibu Kaihatsu
+viprp1t                         // (c) 1995 Seibu Kaihatsu (Tuning License)
 viprp1u                         // (c) 1995 Seibu Kaihatsu (Fabtek license)
 viprp1ua                        // (c) 1995 Seibu Kaihatsu (Fabtek license)