It's sold as a bundle with the first game, under "Tropico Reloaded".

Here is a website to supplement older games that are missing their Italian content or have fan-made patches:
https://www.oldgamesitalia.net

There is also gamestranslator.it, if I remember correctly.

I am pretty sure Theme Hospital has Italian voice over, plus others, I need to verify.

The store page is misleading pointing that is has no audio!

I found an example of Theme Hospital's audio: https://www.youtube.com/watch?v=XxcQdT2pH3E

Does anyone know if Papers, Please has voiceovers? I've only heard the unintelligible voice from the booth, but the store page says it has voiceovers in many languages.

I don't remember ever hearing any voiceover when I played it. It's been a while ago, but I think I would remember.

Epic Mickey Rebrushed has Italian audio.

Just added World In Conflict since it's being promoted and I don't play RTS, so it had gone unfound.

https://www.gog.com/en/game/thronebreaker_the_witcher_tales probably has the most diverse list of languages and high quality voiceovers of any game being sold anywhere. I thought Riot Games had the most voiceover options, but CDPR has achieved an amazing level of production quality and scale with both this and Cyberpunk.

This is a text-only game so I won't put it in the list, but it is from an Italian dev:
https://www.gog.com/en/game/ludus_mortis