Saturnalia - https://www.saturnaliagame.com/
Marmoset - https://store.steampowered.com/app/1783090/Marmoset/

thanks

SingStar Mecano - https://es.wikipedia.org/wiki/SingStar_Mecano

There are the normal version and a special edition "Edición especial" with the microphones. https://www.trenesymas.com/WebRoot/StoreES3/Shops/64100264/5482/A5B2/0874/7457/7963/C0A8/2BBC/143A/R_301_A.jpg

Tx!

Brothers in Arms DS (DS) - https://www.mobygames.com/game/brothers-in-arms-ds

EDIT: Thank you! :)

@everyone - Those have all been added!

Lucky Star Moe Drill - DS
Lucky Star: Ryoo Gakuen Otosai - PS2, PSP
Lucky Star: Net Idol Meister - PSP

@Cheesyben - Those have all been added!

scarlet hollow plz
:)

Suzumiya Haruhi no Yakusoku - PSP
Suzumiya Haruhi no Heiretsu - Wii
Suzumiya Haruhi no Chokuretsu - DS
Day of Sagittarius III - IOS
Suzumiya Haruhi no Danketsu - Mobile
Suzumiya Haruhi-chan no Mahjong - PSP
Suzumiya Haruhi no Tensei - Mobile

Alexio -PS4
https://store.playstation.com/en-us/product/UP6537-CUSA31478_00-7667347010097496/

Ghost of Tomorrow https://store.steampowered.com/app/1325970/Ghost_of_Tomorrow_Chapter_1/

Shokugeki no Soma: Yujo to Kizuna no Hitosara - 3DS
Shokugeki no Soma: Saikyo no Recipe - IOS, Android

@everyone - Those have all been added, except for a couple of the Suzumiya games. I couldn't dig up much information on them, let alone a cover to use.

one step from eden
switch, ps4, xbox, steam
https://www.nintendo.com/store/products/one-step-from-eden-switch/
https://limitedrungames.com/products/switch-limited-run-114-one-step-from-eden

Army of Ruin - https://store.steampowered.com/app/1918040/Army_of_Ruin/

@WeegeeCool - We have that one here: https://www.completionator.com/Game/Details/52467

@Terodal - That one has been added!

Jazz Jackrabbit 2 Collection - https://www.gog.com/en/game/jazz_jackrabbit_2_collection

Thanks!

COSMOS
- https://dawnosaur.itch.io/cosmos
- https://store.steampowered.com/app/1252100/COSMOS/

Is it possible to add these games?

Cosmoteer: Starship Architect & Commander - hiddenThe_Squad/
Inside the Backrooms - https://store.steampowered.com/app/1987080/Inside_the_Backrooms/
Stardeus - https://store.steampowered.com/app/1380910/Stardeus/
Trash Horror Collection 2 - https://store.steampowered.com/app/2119240/Trash_Horror_Collection_2/

Thanks!

The Battle Cats Pop!
https://www.nintendo.com/store/products/the-battle-cats-pop-3ds/

Swords & Darkness
https://www.nintendo.com/store/products/swords-darkness-3ds/

Radio Hammer
https://www.nintendo.com/store/products/radiohammer-3ds/

Undead Bowling
https://www.nintendolife.com/reviews/3ds-eshop/undead_bowling

Chain Blaster
https://www.nintendo.com/store/products/chain-blaster-3ds/

Picdun 2: Witch's Curse
https://www.nintendo.com/store/products/picdun-2-witchs-curse-3ds/

Crazy Construction
https://www.nintendo.com/store/products/crazy-construction-3ds/

Dot Runner Complete Edition
https://www.nintendo.com/store/products/dot-runner-complete-edition-3ds/

Bit Boy!! Arcade
https://www.nintendo.com/store/products/bit-boy-arcade-3ds/

Shift DX
https://www.nintendo.com/store/products/shift-dx-3ds/

Cube Tactics
https://www.nintendo.com/store/products/cube-tactics-3ds/

Undead Storm Nightmare
https://www.nintendo.com/store/products/undead-storm-nightmare-3ds/

Dementium Remastered
https://www.nintendo.com/store/products/dementium-remastered-3ds/

Rage of the Gladiator
https://www.nintendo.com/store/products/rage-of-the-gladiator-3ds/

Silver Falls Guardians and Metal Exterminators
http://silverfallsgame.com/game/

This last game was originally released on DSI. It's the first game in the series, it's sequel (Go! Go! Kokopolo 3D: Space Recipe for Disaster) is already listed on the site as "Go! Go! Kokopolo 3D". Both of these games recently received physical prints from Limited Run Games, so (of course) I simply had to get them! Anyways, the info is below for the first game:
Go! Go! Kokopolo: Harmonious Forest Revenge
https://en.wikipedia.org/wiki/Go!_Go!_Kokopolo
https://limitedrungames.com/products/go-go-kokopolo-harmonious-forest-revenge-3ds

Thanks!

Spellbook Demonslayers - https://store.steampowered.com/app/2007530/Spellbook_Demonslayers/

Asterigos: Curse of the Stars - https://www.xbox.com/en-US/games/store/asterigos-curse-of-the-stars/9pb5xb3fm6xc

@everyone - I think everything should be added now!

Destroy All Humans Clone Carnage - https://www.gog.com/en/game/destroy_all_humans_clone_carnage

Steam link wasn't showing up in the post, some combination of characters I think broke it, so that is the gog link

Thanks!

@monogoat - That one has been added!

Valis: The Fantasm Soldier Collection - https://limitedrungames.com/products/switch-limited-run-137-valis-the-fantasm-soldier-collection / https://www.nintendo.com/store/products/valis-the-fantasm-soldier-collection-switch/
which includes TurboGrafx versions of Valis The Fantasm Soldier, Valis II, Valis III which are all already in Completionator I just need collection entry
Valis: The Fantasm Soldier Collection II - https://limitedrungames.com/products/switch-limited-run-162-valis-ii
which includes Valis IV, Syd of Valis, and Mega Drive version of Valis: The Fantasm Soldier