The question sounds a bit strange, but I love games where there are huge monsters, whether on land or under water. For example, Monster Hunter, elder scrolls, or anything else.
The best thing would be a role-playing game, at least something that you can move around freely, and just the big monsters. ^^
Do you know a few such games? (no matter whether PC, XBOX, PS or Nintendo)
Thank you in advance!
Best wishes!
Edit: Age doesn't matter, I also like to play older games
Shadow of the Colossus ;-)
The classic:
Wow
Yes I don't want to pay for a game every month now, but thanks anyway.
Nier: Automata
It looks really interesting, thanks.
The Last Guardian may also be something for you:-)
Asura's wrath is not an RPG but who has fought against an opponent who is bigger than a planet
The Witcher (there are several parts) - I'm not quite sure if it fits what you're looking for.
Dark Souls (there are several parts)
God Eater (there are several parts)
Horizon: Zero Dawn - I'm not quite sure if it fits what you're looking for.
Toukiden (there are several parts)
Tera: Rising
Dragon's Dogma: Dark Arisen
Dauntless
PS: I just googled for "Similar Games Monster Hunder World" and got these results.
https://www.gamestar.de/artikel/monster-hunter-world-aktuelle-pc-alternativen,3326333,seite8.html