No.Kingdom Hearts III was released on PlayStation 4, Xbox One, and PC (Epic/Steam). It is not on Wii, Wii U, or Nintendo Switch.
Why Not Wii?
The Wii (2006) lacks the hardware power for KH3's Unreal Engine 4 graphics and physics.
Development began years after Wii's lifecycle ended.
Kingdom Hearts on Nintendo
Kingdom Hearts: Chain of Memories (GBA), 358/2 Days & Re:coded (DS), Dream Drop Distance (3DS), and Melody of Memory (Switch) are on Nintendo handhelds.
Cloud versions of KH1.5+2.5, 2.8, and 3 stream to Switch (requires stable internet).
To play Kingdom Hearts III, you need a PS4, Xbox One, or capable PC.
