diff --git a/src/mame/drivers/namcos86.c b/src/mame/drivers/namcos86.c
index 3bb15dd8ce8..146033f1fd0 100644
--- a/src/mame/drivers/namcos86.c
+++ b/src/mame/drivers/namcos86.c
@@ -159,7 +159,7 @@ TODO:
   written out of order and hooking them up in the usual way causes the MCU to
   stop receiving interrupts.
 
-- rthundro crashes often after you die; I've seen this happen only in area 5, though.
+- rthunder1 crashes often after you die; I've seen this happen only in area 5, though.
 
 - In wndrmomo, nothing happens when setting the service mode dip switch while
   the game is running. This is unusual for Namco.
@@ -798,7 +798,7 @@ static INPUT_PORTS_START( rthunder )
 	PORT_DIPSETTING(    0x01, "6" )
 INPUT_PORTS_END
 
-static INPUT_PORTS_START( rthundro )
+static INPUT_PORTS_START( rthunder1 )
 	PORT_START("IN0")
 	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* button 3 player 2 */
 	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 )
@@ -1357,7 +1357,58 @@ ROM_START( rthunder )
 	/* m3 empty */
 ROM_END
 
-ROM_START( rthundero )
+ROM_START( rthunder2 )
+	ROM_REGION( 0x18000, "cpu1", 0 )
+	ROM_LOAD( "rt2_1.9c",    0x8000, 0x8000, CRC(7eaa9fdf) SHA1(aecc338b025eb5cd48c26ffb2c658d03478361c8) )
+	/* 9d empty */
+
+	ROM_REGION( 0x18000, "cpu2", 0 )
+	ROM_LOAD( "rt2_2.12c",   0x08000, 0x8000, CRC(1c0e29e0) SHA1(17f6981d10414d14535835919bb05413498421f1) )
+	ROM_LOAD( "rt2_3.12d",    0x10000, 0x8000, CRC(f5d439d8) SHA1(87c610913e86c2dca5ec64f7a96ef3a0ddfe5968) )
+
+	ROM_REGION( 0x18000, "gfx1", 0 )
+	ROM_LOAD( "rt1_7.7r",     0x00000, 0x10000, CRC(a85efa39) SHA1(1ed63b421a93960668cb4558c1ca1b3c86b1f6be) )	/* plane 1,2 */
+	ROM_LOAD( "rt1_8.7s",     0x10000, 0x08000, CRC(f7a95820) SHA1(82fe0adf6c5b3abef19031646e1eca1585dcc481) )	/* plane 3 */
+
+	ROM_REGION( 0x0c000, "gfx2", 0 )
+	ROM_LOAD( "rt1_5.4r",     0x00000, 0x08000, CRC(d0fc470b) SHA1(70f7f1e29527044eae405f58af08bad3097990bd) )	/* plane 1,2 */
+	ROM_LOAD( "rt1_6.4s",     0x08000, 0x04000, CRC(6b57edb2) SHA1(4a8f1e024e5be4d76f2c99d506ae7da86af3d1f5) )	/* plane 3 */
+
+	ROM_REGION( 0x80000, "gfx3", 0 )
+	ROM_LOAD( "rt1_9.12h",    0x00000, 0x10000, CRC(8e070561) SHA1(483b4de79f2429236f45c32ec56b97a9a90574a3) )
+	ROM_LOAD( "rt1_10.12k",   0x10000, 0x10000, CRC(cb8fb607) SHA1(ba9400fb19d29a285897cc3a2d4d739ce845f897) )
+	ROM_LOAD( "rt1_11.12l",   0x20000, 0x10000, CRC(2bdf5ed9) SHA1(a771e922ad868ca1e008d08a8ff5fdf28aa315fc) )
+	ROM_LOAD( "rt1_12.12m",   0x30000, 0x10000, CRC(e6c6c7dc) SHA1(ead143c2730a77911839a25734550188533c7b96) )
+	ROM_LOAD( "rt1_13.12p",   0x40000, 0x10000, CRC(489686d7) SHA1(a04b57424acbf2584f736b55740d613a1aae2b8b) )
+	ROM_LOAD( "rt1_14.12r",   0x50000, 0x10000, CRC(689e56a8) SHA1(b4d6de4eec47856a62f396f55d531fbf345cf12a) )
+	ROM_LOAD( "rt1_15.12t",   0x60000, 0x10000, CRC(1d8bf2ca) SHA1(949ae8b00b94bfa5bc2d07888aafbaaaea559b06) )
+	ROM_LOAD( "rt1_16.12u",   0x70000, 0x10000, CRC(1bbcf37b) SHA1(8d27c49b36d5e23dd446c150ada3853eec75e4c1) )
+
+	ROM_REGION( 0x1420, "proms", 0 )
+	ROM_LOAD( "rt1-1.3r",     0x0000, 0x0200, CRC(8ef3bb9d) SHA1(4636d6b8ba7611b11d4863fab02475dc4a619eaf) )	/* red & green components */
+	ROM_LOAD( "rt1-2.3s",     0x0200, 0x0200, CRC(6510a8f2) SHA1(935f140bfa7e6f8cebafa7f1b0de99dd319273d4) )	/* blue component */
+	ROM_LOAD( "rt1-3.4v",     0x0400, 0x0800, CRC(95c7d944) SHA1(ca5fea028674882a61507ac7c89ada96f5b2674d) )	/* tiles color table */
+	ROM_LOAD( "rt1-4.5v",     0x0c00, 0x0800, CRC(1391fec9) SHA1(8ca94e22110b20d2ecdf03610bcc89ff4245920f) )	/* sprites color table */
+	ROM_LOAD( "rt1-5.6u",     0x1400, 0x0020, CRC(e4130804) SHA1(e1a3e1383186d036fba6dc8a8681f48f24f59281) )	/* tile address decoder (used at runtime) */
+
+	ROM_REGION( 0x10000, "mcu", 0 )
+	ROM_LOAD( "rt2_4.6b",       0x4000, 0x8000, CRC(0387464f) SHA1(ce7f521bc2ecc6525880da2551daf595a394a275) )	/* subprogram for the MCU */
+	ROM_LOAD( "cus60-60a1.mcu", 0xf000, 0x1000, CRC(076ea82a) SHA1(22b5e62e26390d7d5cacc0503c7aa5ed524204df) )	/* MCU internal code */
+
+	ROM_REGION( 0x40000, "user1", 0 ) /* bank switched data for CPU1 */
+	ROM_LOAD( "rt1_17.f1",    0x00000, 0x10000, CRC(766af455) SHA1(8c71772795e783d6c4b88af9a311d55e363c298a) )
+	ROM_LOAD( "rt1_18.h1",    0x10000, 0x10000, CRC(3f9f2f5d) SHA1(541b8f80800cb55e4b81ac48771d00fe10c90743) )
+	ROM_LOAD( "rt3_19.k1",    0x20000, 0x10000, CRC(c16675e9) SHA1(e31c28cb95ffa85392c74e1d81bfa89acbaefeb9) )
+	ROM_LOAD( "rt3_20.m1",    0x30000, 0x10000, CRC(c470681b) SHA1(87f8d8509c3e8207f34c6001aaf4d0afdad82d0d) )
+
+	ROM_REGION( 0x80000, "namco2", 0 ) /* PCM samples for Hitachi CPU */
+	ROM_LOAD( "rt1_21.f3",    0x00000, 0x10000, CRC(454968f3) SHA1(e0a679353491190b6d4f0355324456a1bd7c8a7a) )
+	ROM_LOAD( "rt2_22.h3",    0x20000, 0x10000, CRC(fe963e72) SHA1(4c9ce4e4c8e756a743c541f670a6741b520125e3) )
+	/* k3 empty */
+	/* m3 empty */
+ROM_END
+
+ROM_START( rthunder1 )
 	ROM_REGION( 0x18000, "cpu1", 0 )
 	ROM_LOAD( "r1",           0x8000, 0x8000, CRC(6f8c1252) SHA1(586f2e33dd16f31131e4ae9423d639fdc6555c9c) )
 	/* 9d empty */
@@ -1521,11 +1572,12 @@ DRIVER_INIT_MEMBER(namcos86_state,namco86)
 
 
 
-GAME( 1986, skykiddx, 0,        skykiddx, skykiddx, namcos86_state, namco86, ROT180, "Namco", "Sky Kid Deluxe (set 1)", 0 )
-GAME( 1986, skykiddxo,skykiddx, skykiddx, skykiddx, namcos86_state, namco86, ROT180, "Namco", "Sky Kid Deluxe (set 2)", 0 )
-GAME( 1986, hopmappy, 0,        hopmappy, hopmappy, namcos86_state, namco86, ROT0,   "Namco", "Hopping Mappy", 0 )
-GAME( 1986, roishtar, 0,        roishtar, roishtar, namcos86_state, namco86, ROT0,   "Namco", "The Return of Ishtar", 0 )
-GAME( 1986, genpeitd, 0,        genpeitd, genpeitd, namcos86_state, namco86, ROT0,   "Namco", "Genpei ToumaDen", 0 )
-GAME( 1986, rthunder, 0,        rthunder, rthunder, namcos86_state, namco86, ROT0,   "Namco", "Rolling Thunder (new version)", 0 )
-GAME( 1986, rthundero,rthunder, rthunder, rthundro, namcos86_state, namco86, ROT0,   "Namco", "Rolling Thunder (old version)", 0 )
-GAME( 1987, wndrmomo, 0,        wndrmomo, wndrmomo, namcos86_state, namco86, ROT0,   "Namco", "Wonder Momo", GAME_IMPERFECT_GRAPHICS )
+GAME( 1986, skykiddx, 0,        skykiddx, skykiddx,  namcos86_state, namco86, ROT180, "Namco", "Sky Kid Deluxe (set 1)", 0 )
+GAME( 1986, skykiddxo,skykiddx, skykiddx, skykiddx,  namcos86_state, namco86, ROT180, "Namco", "Sky Kid Deluxe (set 2)", 0 )
+GAME( 1986, hopmappy, 0,        hopmappy, hopmappy,  namcos86_state, namco86, ROT0,   "Namco", "Hopping Mappy", 0 )
+GAME( 1986, roishtar, 0,        roishtar, roishtar,  namcos86_state, namco86, ROT0,   "Namco", "The Return of Ishtar", 0 )
+GAME( 1986, genpeitd, 0,        genpeitd, genpeitd,  namcos86_state, namco86, ROT0,   "Namco", "Genpei ToumaDen", 0 )
+GAME( 1986, rthunder, 0,        rthunder, rthunder,  namcos86_state, namco86, ROT0,   "Namco", "Rolling Thunder (rev 3)", 0 )
+GAME( 1986, rthunder2,rthunder, rthunder, rthunder1, namcos86_state, namco86, ROT0,   "Namco", "Rolling Thunder (rev 2)", 0 )
+GAME( 1986, rthunder1,rthunder, rthunder, rthunder1, namcos86_state, namco86, ROT0,   "Namco", "Rolling Thunder (rev 1)", 0 )
+GAME( 1987, wndrmomo, 0,        wndrmomo, wndrmomo,  namcos86_state, namco86, ROT0,   "Namco", "Wonder Momo", GAME_IMPERFECT_GRAPHICS )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 1a1e28771f5..8b3e83bdc70 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -793,8 +793,9 @@ skykiddx		// (c) 1986
 skykiddxo		// (c) 1986
 roishtar		// (c) 1986
 genpeitd		// (c) 1986
-rthunder		// (c) 1986 new version
-rthundero		// (c) 1986 old version
+rthunder		// (c) 1986
+rthunder2		// (c) 1986
+rthunder1		// (c) 1986
 wndrmomo		// (c) 1987
 
 // Thunder Ceptor HW