Shmupmame v5.3.1 is released. Shmupmame is an improved MAME. Shmupmame cuts down on input delay for a lot of drivers for shmups which owns. what also owns is that these drivers include the cps1, cps2, and cps3 drivers which means you can play capcom fighters with less input delay.

Shmupmame Changelog:
Loop 2 start for the following games:
• Batsugun special (Starts at loop 2 with max power, but “level 1”)
• Donpachi (jp) (Starts at loop 2 with max power)
• Dodonpachi (Starts at loop 2 with minimum power, max power not needed at all)
• Dai-ou-Jou Black Label (also includes WL) (Starts at loop 2 with max power for both shot and laser)
• Ketsui Ura Loop (Starts at loop 2 with max power)
• Ketsui Omote Loop (Starts at loop 2 with standard power)
• DaiFukkatsu 1.5 Omote Loop (Starts at loop 2 with max power)
List of included drivers (shmups only, with some exceptions):
Shmupmame 5 “exlusives” (current alternatives are worse, due to inaccuracies, runahead/preemtive limitations or only available in vanilla mame)
• CV1k via single buffering (Mushihimesama, Futari, Galuda 2, Dfk, Ibara, Deathsmiles, Pink Sweets, etc..)
• Sega STV via single buffering (Guardian Force, Radiant Silvergun, Cotton 2/boomerang, Soukyugurentai, Shienryu)
• Sony ZN via single buffering (Brave blade, G-Darius, Raystorm, Aero Fighters special)
• Taito G-net via single buffering (Raycrisis, Psyvariar, Shikigami no shiro, Night Raid, Xii Stag)
• Gradius IV via single buffering (voodoo1 video driver, no artefict)
New de-lag methods in shmupmame 5
• Cave 68000 via input injection (Dodonpachi, Esprade, Dangun feveron, Mazinger Z, Air gallet, Guwange (buffer delete)) (Donpachi and Hotdog Storm already responsive)
• Jaleco Mega System 32 via input injection (P47 Aces, Game Tengoku, Gratia)
• Gradius II via sprite buffer delete (the method is new, might have been de-lagged in older builds though)
De-lagged drivers ported from shmupmame 4.2 (removed hacks with visual side effects)
• Psikyo 1st gen both injection and sprite buffer delete (Strikers 1945, Gunbird, Sengoku Ace, Tengai) (Frame advance shows 3 frames, but measured at 2 frames)
• Namco System 1 both injection and sprite buffer delete (Galaga ’88, blast off, dangerous seed, dragon spirit (injection only))
• Some NMK 16 shmups via sprite buffer delete (Thunder Dragon 2, Rapid Hero, Macross 2, Strahl, US AAF Mustang, Black Heart, Acrobat mission, task force harrier)
• Psikyo 2nd gen via sprite buffer delete (Strikers 1945 2/3, Gunbird 2, Dragon Blaze, Space Bomber)
• Mars matrix via sprite buffer delete (5 frames -> 3 frames, autosword and autofire for player 1)
• Cps2 via sprite buffer delete (Progear, Gigawing, 1944, 19XX) *not Great Mahou/dimahou and 19XX due to visual artifacts
• Cps1 via sprite buffer delete (3wonders, 1941, area88, carrier air wing, lost/forgotten worlds) *varth/3wonders/mercs are untouched since it results in visual artifacts
• Jaleco megasys1 via sprite buffer delete (Chimera Beast, EDF, Cybattler, P47, Saint Dragon) Plus alpha untouched but responsive
• Boogie wings via sprite buffer delete (unique hardware/driver)
Included vanilla responsive drivers (2 frames lag or less)
• PGM (Ketsui, Espgaluda, Ddp Dai-ou-jou, Ddp2)
• Konami systems (Parodius series, Gradius I/III, Twinbee series, Salamander series, Thunder cross 1/2, Xexex, Trigon)
• Toaplan systems (Batsugun, Tatsujin/Truxton 1/2, Fling Shark, Fire Shark, Twin Cobra, Outzone, Dogyuun, Vimana, Hellfire, Zero wing)
• Taito F3 (Rayforce, Darius Gaiden, Grid Seeker, Gekirindan, Twin Cobra 2, Space Invaders 95)
• Taito F2 (Metal BLack, Gun & Frontier, Super Space Invaders, Megablast)
• Seibu Systems (Raiden 1, Raiden 2/DX, Raiden Fighters 1/2/Jet, Viper Phase one)
• Sega Sysemt 16A/B (Fantasy zone 1/2, cotton, aurail, SDI, sonic boom)
• Neogeo shmups (some) (twinkle star, tomaday, andro dunos, viewpoint, sonic wings 2/3, pulstar, last resort, zed blade, shock troopers 1/2), the rest need testing
• Omega Fighters & Cyvern (might need injection)
• Irem System (R-type 1/2/Leo, Mystic Riders, Image Fight, X-multiply, Air Duel, Gallop, Dragon Breed)
• Darius 1 & 2
• 1942 & 1943 & 1943 kai
• Some classics (mad planets, robotron, juno first, sky kid, xevious, zaxxon, centipede, millipede, space invaders, galaxian, galaga, gaplus, space invaders, gyruss)
• Sammy Seta Visco hardware (Change Air blade, storm blade, vasara 1/2, ultra x weapons, twin eagle 2)
• Nostradamus
Drivers/games unfortunately not included:
• Most of Raizing’s 68000 games, 3-4 frames delay, recommended to play with a runahead/preemptive emulator (Mahou is included as it is responsive)
• Dragon Saber, very laggy and buffer delete is noticable because of panning
• Daioh (somehow very laggy even though other games on the system are fine, investigated a bit and found no easy fix)
• Dooyong, Afega, Comad and other very low budget shmups, due to lack of interest
• Early 80s space invaders copycats, there are hundreds of those, tried to inlcude some of the best ones

Download: Shmupmame v5.3.1 x64
Source: Here