When talking, I'll say Nintendo and Super Nintendo. When I read it, it does come out as "Ness" and "S Ness" in my head.
When talking about games to people in French, I often pronounce titles the wrong way just because that's the way everyone pronounces them and they'd look at me funny if I used the correct pronunciation.
Examples : Super Mario Bross
For Tomb Raider, I'll say Tomb pronounced like Bomb with a T.
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