https://wccftech.com/horizon-forbidden-west-has-2nd-biggest-ps5-launch-in-the-uk-delay-happened-to-avoid-crunch/

Horizon Forbidden West registered a pretty good launch in the United Kingdom, according to GfK figures cited by GamesIndustry.biz. The second game in Guerrilla's open world action RPG franchise had the second biggest launch for a PlayStation 5 game after Insomniac's Spider-Man: Miles Morales. However, that game had the advantage of being a launch title, with consumers pretty much forced to get it because of the relatively scarce lineup of available games.

68% of the sales happened on PlayStation 5, while the remaining 32% of users bought the PS4 version (which comes with a free PS5 upgrade, by the way). Compared to the first game's debut, Horizon Forbidden West sales in the UK were down by 35%. However, GfK only tracks boxed sales, and the percentage of digital sales has massively increased in the past five years.