Yes, there is a large Spanish-speaking community but so far it has been unwilling, or unable, to develop this version of the game.
So the task has fallen to individuals in the English-speaking community.
"even English people can enjoy it"
There are moments of the game that require the player to understand verbal advice given to know what to do.
This would not be enjoyable for those who do not understand Spanish.
It will be shared in Spanish, when we are able to share it in English too.
In the meantime the Spanish community have the WinUAE version to satisfy their needs.
But if you really want to enjoy it, and it is a really great game preferable even to Mad Dog , then you'll have to wait for the necessary support to be offered.
If you want that to happen sooner, then find a way to help out.
Edit: Removed footnote.