@TheSamuraiEdge and @Brunauss - Those have both been added!

Ps1
Mizzurna Falls
https://en.m.wikipedia.org/wiki/Mizzurna_Falls

Thank you

@Hystericmoon - That one has been added!

Poker Champion: Texas Hold'em

Sorry, Nintendo Switch
Poker Champion: Texas Hold'em

Central Fugitive - https://astrosaurus-games.itch.io/central-fugitive
Selection Process - https://eduardogamedev.itch.io/selection-process
Dayscream - https://bernhardp.itch.io/dayscream
Super Head Ball - https://sethsafety.itch.io/super-head-ball
Only One Burn - https://leylinestudios.itch.io/only-one-burn
RogueSlide - https://beepyeah.itch.io/rogueslide
Shredded Secrets - https://girlsmakegames.itch.io/shredded-secrets
Spooky Waltz - https://soulares.itch.io/spooky-waltz
reIterate() - https://dedhedzed.itch.io/reiterate
Awesome Mix Tape - https://projector-studios.itch.io/awesome-mix-tape
SubDivide - https://sockman.itch.io/subdivide
Move 'n' Bloom - https://waldemar-umaniz.itch.io/move-n-bloom
Pippu - Bauble Quest - https://ci.itch.io/pippu-bauble-quest
Pawndemonium - https://tallbeard.itch.io/pawndemonium
Project SNAQE - https://store.steampowered.com/app/1725880/Project_SNAQE/
Roly-Polo - https://lapieza.itch.io/roly-polo
Hack Grid - https://daisy-games.itch.io/hackgrid

Forgot a few.
The Crystal Golem - https://luis-s.itch.io/crystal-golem
The Count of Monte Carlo - https://philblank.itch.io/the-count-of-monte-carlo
Death Drives a Bus - https://tallbeard.itch.io/death-drives-a-bus
Possession - https://weirdfellows.itch.io/possession
Splash Blast Panic - https://teamkwakwa.itch.io/splash-blast-panic
Fake Illusions - https://auroriax.itch.io/fake-illusions
dstnce. - https://pondodev.itch.io/dstnce
Operation STEEL - https://leanderish.itch.io/steel

Please add:
Chameneon - https://store.steampowered.com/app/1729090/Chameneon/
Cosmos Bit - https://store.steampowered.com/app/1823170/Cosmos_Bit/
Psycron - https://store.steampowered.com/app/1368410/PSYCRON/

Some visual novel games based on storeis by Akagawa Jirou
Yasoukyoku (Ps1)
https://psxdatacenter.com/games/J/A/SLPS-01415.html

Yasoukyoku 2
https://psxdatacenter.com/games/J/A/SLPS-03213.html

Akagawa Jirou Mystery: Tsuki no Hikari ~Shizumeru Kane no Satsujin~ (ps2)
https://vndb.org/v11658

Majotachi No Nemuri (SNES and Ps1)
https://psxdatacenter.com/games/J/J/SLPS-01863.html
The snes verison i think has box art and details but the ps1 port is missing

Some Chunsoft Visual novels.

Kamaitchi no yoru 2 (ps2)
https://vndb.org/v5080
Kamaitchi no yoru Triple (ps2)
https://vndb.org/v10560

Shin Kamaitachi no Yoru (ps3)
https://vndb.org/v10561

DS
99 no Namida
https://www.giantbomb.com/99-no-namida/3030-30155/

Cross Tantei Monogatari
The sega saturn version is just one release
https://segaretro.org/Cross_Tantei_Monogatari:_Motsureta_Nanatsu_no_Labyrinth
I think it's listed as 7tsu no labyrinth on here.

There is also a ps1 port that was released in 3 varients
1 is the entire entire game
Cross Tantei Monogatari
https://psxdatacenter.com/games/J/C/SLPM-86280.html

Then it was also released in two halves at a budget price
Cross Tantei Monogatari - Zenpen
https://psxdatacenter.com/games/J/C/SLPM-86638.html
Cross Tantei Monogatari - Kouhen
https://psxdatacenter.com/games/J/C/SLPM-86639.html

Twilight Syndrome series
Another game released as 1 release and also split into two.

Twilight Syndrome ~Tansaku-hen~
https://vndb.org/v33133
Twilight Syndrome ~Kyuumei-hen~
https://vndb.org/v33134

(One release)
Twilight Syndrome - Special
https://psxdatacenter.com/games/J/T/SLPS-01442.html

Also:
Twilight Syndrome - Saikai
https://psxdatacenter.com/games/J/T/SLPS-02850.html

Moonlight Syndrome
https://psxdatacenter.com/games/J/M/SLPS-01001.html

Thank you

Earth Defense Force 6 - https://www.play-asia.com/earth-defense-force-6/13/70eyct

Nintendo Switch:
Pirates: All Aboard
And
World Neverland- Elena Kingdom ("Another Life Adventure")

Please add the following:

Knights of Valour

Release date: 1999
Developer: International Games System
Publisher: International Games System
Genre: Beat 'em up
Platforms: Arcade

Source: https://en.wikipedia.org/wiki/Knights_of_Valour

Life is Strange Remastered Collection

Forget me not Palette (Ps1)

https://psxdatacenter.com/games/J/F/SLPS-03191.html

Romance Wa Ken No Kagayaki II (Ps1)
https://psxdatacenter.com/games/J/R/SLPM-87113.html

G.O.D. Pure - Growth or devolution (Ps1)
https://psxdatacenter.com/games/J/G/SLPS-00944.html
An remake of this SNES game
https://completionator.com/Game/Details/44239

Jailbreaker (ps1)
https://psxdatacenter.com/games/J/J/SLPS-02076.html

Exodus Guilty (Ps1)
https://psxdatacenter.com/games/J/E/SLPS-01721.html

Hermie Hopperhead: Scrap Panic (Ps1)
https://en.wikipedia.org/wiki/Hermie_Hopperhead:_Scrap_Panic

Cosmowarrior Zero (Ps1) (Mistakenly titled Cosmowarrior Rei Zero here)
https://psxdatacenter.com/games/J/C/SLPM-86484.html

Expert (Ps1)
https://psxdatacenter.com/games/J/E/SLPS-00342.html

T Kara Hajimaru Monogatari (Ps1)
https://psxdatacenter.com/games/J/T/SLPS-01350.html

Cybernetic Empire (Ps1)
https://psxdatacenter.com/games/J/C/SLPS-01912.html

Septentrion - Out of the Blue (Ps1
https://psxdatacenter.com/games/J/S/SLPS-01940.html

Ring of Sias (PS1)
https://psxdatacenter.com/games/J/R/SLPS-00207.html

Yarudora Series (ps1 and ps2)
https://www.giantbomb.com/yarudora-series/3025-2315/

1
https://psxdatacenter.com/games/J/Y/SCPS-10053.html
2
https://psxdatacenter.com/games/J/Y/SCPS-10056.html
3
https://psxdatacenter.com/games/J/Y/SCPS-10067.html
4
https://psxdatacenter.com/games/J/Y/SCPS-91244.html

The Official Carnival By SEGA (Atari 2600)
https://www.ebay.com/itm/114044510940
https://i.etsystatic.com/34189630/r/il/cb8bca/3652227734/il_fullxfull.3652227734_dfix.jpg
(theres black and white cart versions)

Daikon Set
https://www.nintendolife.com/games/wiiu-eshop/daikon_set

Humanitarian Helicopter
https://www.nintendolife.com/games/wiiu-eshop/humanitarian_helicopter

Thanks!

Castle on the Coast https://store.steampowered.com/app/1341900/Castle_on_the_Coast/
CounterSide https://store.steampowered.com/app/1976440/CounterSide/
Defend the Rook https://store.steampowered.com/app/1531250/Defend_the_Rook/
Flashout 3D: Enhanced Edition https://store.steampowered.com/app/2022780/FLASHOUT_3D_Enhanced_Edition/
Soulstone Survivors: Prologue https://store.steampowered.com/app/2113430/Soulstone_Survivors_Prologue/
Third Power https://store.steampowered.com/app/2077460/Third_Power/
Try Me https://store.steampowered.com/app/2019220/Try_Me/
Tvo https://store.steampowered.com/app/2026990/Tv/

f1 manager 2022 - https://store.steampowered.com/app/1708520/F1_Manager_2022/

Hello!

I have found some games that are missing from the database:

Atelier Sophie 2: The Alchemist of the Mysterious Dream
https://store.steampowered.com/app/1621310/Atelier_Sophie_2_The_Alchemist_of_the_Mysterious_Dream/

RESONANCE OF FATE™/END OF ETERNITY™ 4K/HD EDITION
https://store.steampowered.com/app/645730/RESONANCE_OF_FATEEND_OF_ETERNITY_4KHD_EDITION/

Peak Angle: Drift Online
https://store.steampowered.com/app/547410/Peak_Angle_Drift_Online/

Waves 2: Notorious
https://store.steampowered.com/app/217120/Waves_2_Notorious/

Soul Saga
https://store.steampowered.com/app/251590/Soul_Saga/

Immortality - https://store.steampowered.com/app/1350200/IMMORTALITY/

Elendia Ceus: https://store.steampowered.com/app/370690/Elendia_Ceus/
Mahjong Joou: https://gamefaqs.gamespot.com/gbc/577147-mahjong-joou

Cyber Troopers Virtual-On Force (Xbox 360) - https://marketplace.xbox.com/en-HK/Product/Virtual-On-Force/66acd000-77fe-1000-9115-d8025345084c

EDIT: thanks! :)

Clouzy! https://store.steampowered.com/app/1493360/Clouzy/

@everyone - I think everything should be added now. Some might be under different titles, so let me know if you can't find it (and maybe I missed it).

Nonsense Soccer - https://anttikole.itch.io/nonsense-soccer
2 9 0 1 / / FREELANCER - https://notsleeping.itch.io/2901
Butterflies Episode 2: Getting Up - https://le-capitaine.itch.io/butterflies-episode-2
Asteroids... But Roguelite - https://ghostgoats.itch.io/asteroids-but-roguelite
Millikan's Reach - https://inferiorplanet.itch.io/millikans-reach
Tic Tac Together - https://andrfw.itch.io/tic-tac-together
Wonderland Nights: White Rabbit's Diary - https://skybeargames.itch.io/white-rabbits-diary
Murder at the Cat Show - https://shonte.itch.io/murder-at-the-cat-show
Shell out Showdown - https://manadream.itch.io/shell-out-showdown