I’ve only seen that one and this one i think. I almost merged them because they’re the same game but figured i’d ask you first. 
These should probably be merged
Back with more 
Far From Noise
Bonbon
PAGAN: Autogeny
The White Door
Lost Lands: The Four Horsemen
https://www.grouvee.com/games/47712-lost-lands-the-four-horsemen/
a new life.
Seduce Me the Otome
Once Upon a Crime in the West
Volo Airsport
Crest - an indirect god game
Neocolonialism
Toto Temple Deluxe
Parsnip
I’m sure I’ll find more as I work my way through adding the massive itch.io bundle to my library 
I Have Low Stats But My Class Is "Leader", So I Recruited Everyone I Know To Fight The Dark Lord
Spring Falls
This one is broken and has 0 info, so it probably needs attention even if it’s not for the same game?
Edit 6/30:
Some more ^^;;
Toripon
Abomination Tower
The Secrets of Tremendous Corporation
https://www.grouvee.com/games/48325-the-secret-of-tremendous-corporation/
https://www.grouvee.com/games/77353-the-secret-of-tremendous-corporation/
Retromancer
Otherside
The Trolley
Us Lovely Corpses
Taco Tom 2
Rakete
These are the same game with minimal differences (once they got the James Bond license they adjusted the names of characters and organisations):
These two same games.
Golazo! is the final version.
The James Bond version was apparently only released as such in the US, so i think they still need two different entries.
Also, the kosher edition keeps getting automatically added to my shelves, even though I’ve removed it multiple times.
I’ve found one
Far Cry 3: Blood Dragon
Far Cry 3: Blood Dragon
Far Cry 3: Blood Dragon
Far Cry 3: Blood Dragon
bye
I’ve seen that before, no idea what is going on there. @peter should take a look.
So this one’s a little weird. The way Giant Bomb does DLC entries, each platform gets its own entry. So 3 of these entries are just the different platforms for a DLC entry. The first entry there is a separate entry for the game. That should actually be the real entry because Blood Dragon is standalone. What should happen is the 3 “DLC” entries should be merged into the standalone one. I’m trying to work on data stuff a little bit every morning before work, so I will get to this eventually.
cc: @Vasul
One of this week’s free Epic Games Store games has duplicate entries.

https://www.grouvee.com/games/48043-spaceport-hope/
https://www.grouvee.com/games/58169-spaceport-hope/
https://www.grouvee.com/games/48596-robot-exploration-squad/
@peter mind taking a look at this bug? It seems to be getting added by some script that runs around 12:50 AM. Timestamps from the frontpage activity log:
Aug. 29, 2020, 12:54 a.m.
Aug. 12, 2020, 12:49 a.m.
July 31, 2020, 12:49 a.m.
I just merged the games. The “bug” in this instance was that the Steam game was mapped to the wrong entry. I don’t really have a way of telling the Steam import to not import a game unfortunately. Every single time someone’s wanted to do it, it’s because the data was wrong, like in this case. This should take care of it.