Isekai is a hugely popular genre of anime. It’s one of the most consumed genres of anime in Japan, and it’s also decently followed abroad as well. Due to its incredible popularity, however, it has also become deeply saturated. Many Isekais are extremely similar in overall plot or follow topics that are outright bizarre to the average anime fan. Standing out in this genre with a good story is not easy, but some have managed to do it. On Crunchyroll, one Isekai anime has especially made itself shine from the rest, and it’s none other than ‘That Time I Got Reincarnated as a Slime.’ This hit Isekai has been going strong for years, and it remains the king of Isekai anime on Crunchyroll, surpassing the likes of the Rising of the Shield Hero or Re:Zero.

That Time I Got Reincarnated As A Slime is Crunchyroll’s King of Isekai Anime

that time i got reincarnated as a slime king of isekai crunchyroll

The Isekai genre is broad and can include many themes and topics, but its basis remains generally the same — a character is transported into another world, usually the protagonist. With such a basic concept, it’s unsurprising to see that the Isekai genre is deeply saturated. But, among the thousands of Isekai anime series that have been released over the last few years, one that has stood out more than any other on Crunchyroll, is ‘That Time I Got Reincarnated as a Slime.’

‘That Time I Got Reincarnated as a Slime’ started off as a novel, as is the case with many other Isekai series. It was created in 2013 by the creator Fuse, and while it was always popular, it only blew up worldwide with its anime adaptation. The anime kickstarted in 2018, and since then, the series has received 3 seasons, with more on the way.

‘That Time I Got Reincarnated as a Slime’ could easily be called the king of Isekai anime on Crunchyroll. At the moment, the series has an insane 4.9/5 star rating. This high rating was achieved despite the high number of user ratings, which is far greater than any other Isekai anime on Crunchyroll. The series currently has over 260k user ratings.

That Time I Got Reincarnated As A Slime Is Very Popular Beyond Crunchyroll

While ‘That Time I Got Reincarnated as a Slime’ is huge on Crunchyroll, its popularity goes far beyond that. In Japan, this series is even bigger and followed by fans of all ages. ‘That Time I Got Reincarnated as a Slime’ was even announced as Japan’s most-streamed Isekai based on ABEMA’s list, and it’s one of the most-sold light novels in the country as well. Other Isekai series struggle to compete against it in this regard, and once again, this goes to show how successful a series it truly is.

Even though Slime is incredibly popular internationally, it doesn't quite compare to the love Japan has for this series. For now, That Time I Got Reincarnated As A Slime has shown no signs of slowing down, especially with a new anime movie officially on the way, scheduled to drop later this month, which has only gone on to boost the popularity of this massive franchise even more.

Crunchyroll’s Other Great Isekai Series

That Time I Got Reincarnated as a Slime is the biggest Isekai on Crunchyroll, but it’s definitely not the only popular one. The Rising of the Shield Hero is currently one of the most popular Isekais on the platform as well, especially with its getting a new anime season recently. The series is only going to continue to gain more popularity in the coming months and years.

One can also not forget about Re:Zero. While it doesn’t have as many ratings as ‘That Time I Got Reincarnated as a Slime,’ it could definitely be considered the most influential Isekai in the West. It is one of the biggest anime responsible for popularizing Isekai in the West. Re:Zero remains a fan favorite and fans can’t wait to see the next season. Hopefully, 2026 gives fans access to more new and exciting Isekai anime series on Crunchyroll, as well as the continuation of the already established legendary series.