In a recent statement by Nintendo the company notes that users should not speculate on which games will be available for the the Nintendo Switch based on the console's reveal trailer.
According to the company the reveal trailer "is all about explaining how the Nintendo Switch works", indicating that the gameplay footage included in the video does not necessarily indicate that those games will be available.
"We wanted to convey in a self-contained video how Nintendo Switch represents a new era for video game systems enjoyed in front of a TV, by letting gamers play anywhere, anytime, with anyone they choose. It adds the mobility of a portable system to the power of a home gaming system." the Nintendo spokesperson added.
Surprisingly, one of the actors in the trailer, who also happens to be a Twitch streamer, revealed that during the filming of the video he was holding dummy model, indicating that the gameplay footage was added in post-production.
Pausing the reveal trailer at certain times reveals that gameplay footage was indeed added in post-production because it sometimes overlaps an actor's arm or hand.
Nintendo states that it will talk about Nintendo Switch games "at a later date" but of course "before the March launch," adding that viewers "shouldn't assume what [they] saw on the video represents actual game footage and further specifics on first-party games will be provided later."