List extracted from the PS1 Champion Collection, a "one game one rom" set on archive.org that includes one file for every English-playable game
every PS1 game Japan has been hiding from the rest of the world that you can play WITHOUT knowing Japanese
I encourage you to switch the sorting to "Avg Rating" or "Popularity" to prioritize showing you good games instead, or to "Trending"
I left off the pachinko and pachislot games, you're welcome
also check out my PAL-exclusive English game list (https://www.backloggd.com/u/PZT/list/ps1-europe-and-europejapan-exclusives-all-english-games-that-werent-released-in-america/)

couldn't find on Backloggd, submit them and I'll add them:
Athena no Kateiban: Family Games
Ayrton Senna Kart Duel Special
Bassing Beat
Bassing Beat 2
beatmania Sound of Tokyo
Big Challenge Golf: Tokyo Yomiuri Country Club-hen
Blackjack vs Matsuda Jun
Block Kuzushi: Deden no Gyakushuu
Block Kuzushi Kowashite Help!
Chess 2000
Deco Pre 2 99 Taikenban
Digical League
Doukyuu Re-mix: Billiards Multiple
EPS Series Vol. 1: Because I Love You - Yukiko Morikawa
EPS Series Vol. 2: Moonlight to Daybreak - Yukie Nakama
EPS Series Vol. 3: Come and Kiss Me - Tomomi Tsunoda
EPS Series Vol. 4: Noise Reduction - Tomoa Yamamoto
EPS Series Vol. 5: Believer Dreamer - Junko Mizutani
Formation Soccer '97: The Road to France
Formation Soccer '98 (JP)
Formula Circus
Grille Logic
Gritz: The Pyramid Adventure
GRV 2000
Hacha Macha Pon!
Hard Blow
Hard Rock Cab
Haunted Junction: Seitokai Badge wo Oe!
Hello Kitty White Present
History of Kita Denshi
Hyper Formation Soccer
International Soccer: Excite Stage 2000
J. League Soccer Jikkyou Survival League
JGTC: All Japan Grand Touring Car Championship
Jikkyou Golf Master 2000
Jikkyou Powerful Pro Yakyuu: Premium Ban
Jikkyou Powerful Pro Yakyuu '95
Jikkyou Powerful Pro Yakyuu '97: Kaimakuban
Jikkyou Powerful Pro Yakyuu '98: Kaimakuban
Jikkyou Powerful Pro Yakyuu '98: Ketteiban
Jikkyou Powerful Pro Yakyuu '99: Kaimakuban
Jikkyou Powerful Pro Yakyuu '99: Ketteiban
Jikkyou Powerful Pro Yakyuu 2000: Kaimakuban
Jikkyou Powerful Pro Yakyuu 2000: Ketteiban
Jikkyou Powerful Pro Yakyuu 2001: Ketteiban
Jikkyou Powerful Pro Yakyuu 2001
Jikkyou Powerful Pro Yakyuu 2002: Haru
Kenki Ippatsu! Shovel Master ni Narou! (not the same game as Power Shovel, there are TWO entirely separate PS1 games about operating an excavator)
Kids Station: Basic Soft
Kids Station: Magical Music Eigo de One: Two: Three!
Kids Station: Mickey to Nakamatachi: Kazuasobi IroIro
Kinniku Banzuke Vol. 2: Arata naru Genkai e no Chousen!
Kowloon Jou
Kuru Kuru Cube
L'Arc-en-Ciel: Light My Fire
Lake Masters 2
Las Vegas Dream 2
Martial Beat 2
Max Surfing 2nd
Mezase! Skymark: Challenge Airline Pilot
Morita Kazurou no Chess
Morita Kazurou no Reversi
MTB Dirt Cross
Nakajima Miyuki: Namiromu
Neon Genesis Evangelion Original Screensaver
Nijiro Twinkle: Guru Guru Daisakusen
One Two Smash: Tanoshii Tennis
Otenki Kororin: Weather Tales
Othello World II
Oyaji no Jikan: Nee-chan Tsuri Iku de!
Pacapaca Passion Special
Perfect Performer: The Yellow Monkey
Picnic! Excellent
Pikupiku Sentaro: Puzzle de Gohan
PlayStadium
PlayStadium 2
PlayStadium 3
PlayStadium 4: Fumetsu no Dai League Ball
Pocket Tuner
Power League
Pururun! With Shape Up Girls
Rap-la-muumuu From Jumping Flash 2 (music video)
Ray-ray CD-Rom (promo disc for Rayforce and Ray Tracers)
Robots: Video Alchemy
Salaryman Champ: Tatakau Salaryman
Samurai Shodown: Kenkaku Yubinan Pack (1 & 2 compilation)
Sanmi Ittai
Shanghai: Banri no Choujou
Shanghai: Shouryuu Sairin
Shiki Oriori no Bass Tsuri
Soreike Flyfishing: Let's Go Flyfishing
Space Invaders 2000
Straight Victory: Hoshino Kazuyoshi e no Chousen
Stressless Lesson: Les Les
Super Live Stadium
Super Price Series: Billiards
Super Price Series: Block & Switch
Super Price Series: Reversi
SuperLite 1500 Series: Battle Qix (JP)
SuperLite 1500 Series: Bomboat (JP)
SuperLite 1500 Series: Crazy Balloon 2000 (JP)
SuperLite 1500 Series: KeePer (JP)
SuperLite 1500 Series: Mawatte Mucho! (JP)
SuperLite 1500 Series: Naniwa Wangan Battle (JP)
SuperLite 1500 Series: Qix 2000 (JP)
SuperLite 1500 Series: Reversi II (JP)
SuperLite 1500 Series: Shanghai Dynasty (JP)
SuperLite 1500 Series: Space Chaser 2000 (JP)
SuperLite 1500 Series: Suudoku (JP)
SuperLite 1500 Series: Suudoku 2 (JP)
SuperLite 1500 Series: Suudoku 3 (JP)
SuperLite 1500 Series: Suudoku 4 (JP)
SuperLite 1500 Series: Suudoku 5 (JP)
SuperLite 1500 Series: The Curling (JP)
SuperLite 1500 Series: The Tetris (JP)
SuperLite 1500 Series: Uno (JP)
SuperLite Gold Series: Minna no Othello (JP)
The Match Golf
The Next Tetris DLX
The Yellow Monkey: Trancemission VJ Remix
Toyomaru Club Vol. 1: CR Nanasy (JP)
Toyota Netz Racing
Tsuukai!! Slot Shooting
Uchuu Seibutsu Furopon-kun P!
Vadims
Value 1500: The Shanghai
Vermin Kids
Victory Spike
Wai Wai Bowling
Waku-waku Bowling
Winning Lure
Wolf Fang
Wonder 3: Arcade Gears
World League Soccer: Challenge Nippon
World Pro Tennis 98
Yamagata Digital Museum: Autumn
Yamagata Digital Museum: Spring
Yamagata Digital Museum: Summer
Yamagata Digital Museum: Winter
Yamasa Digi Selection 2
Yamasa Digi Selection DX
Yuuyami Doori Tankentai
Glay Complete Works
Moritaka Chisato: Safari Tokyo
Southern All-Stars: Space Museum of Southern Art
Voice Idol Collection: Pool Bar Story