Lol you are asking something let me check I'll edit the post later on.
looking for WiiU Wii DS 3DS and GC games now. brb
Edit1
Nintendo DS
When you include stuff like EyeTraining etc as games then I have
16 Nintendo (or 13 without eye/walk/training/etc...")
12 Square Enix
5 Sega
3 Konami
2 Ignition
2 Bandai
2THQ
1 Sierra
1 EA
1 Atlus
1 D3 Publisher
So when we only include real games than I have 13 Nintendo games out of 43 DS games in total which makes it 30% (
I was just looking at the Publisher logos on the cartridges!)
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Nintendo 3DS
(I also just look at the publisher logos or googled for the publisher e.g. Nintendo in case of Professor Layton which makes it a "Nintendo game")
10 Nintendo
2 Capcom
1 TecmoKoei
1 Namco
1 Sega
1 Ubisoft
1 Activision
1 SquareEnix
So having 10 Nintendo games out of 18 3DS games in total makes it 55.5555555555555555555555555555%.
9 out of 18 and 50% when you dont count Layton as Nintendo. Since there is simply not enough good third party games out there Nintendo dominates this system. (where are all my JRPGs this time????)
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Nintendo Gamecube
18 Nintendo
3 EA
3 Sega
1 Activision
1 Codemasters
1 SquareEnix
1 THQ
2 Capcom
2 Namco
1 Lucasarts
1 Midway
18 Nintendo Games out of 34 equals 52.94%
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Nintendo WiiU
2 Nintendo
1 Ubisoft
1 THQ
1 Sega
1 Namco
2 out of 6 equals 33.33333333% (you can almost guess every game I own for WiiU lol) I excluded games like Mighty Switch Force and Trine 2 I just counted games that are available at retail.
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Wii will take a long time brb