Kingdom Hearts 4’s impressive gameplay introduction was made using Unreal Engine 4 – but the final game is being developed on Unreal Engine 5, and will see improved visuals when it’s released.
Speaking at the Kingdom Hearts anniversary event where the game was revealed, co-director Yasushi Yasue explained that the trailer was made using Unreal Engine 4, but the game itself is being developed using Unreal Engine 5.
Yasue pointed out that the final game will see better lighting and visual detail in particular.