The adaptation of El Eternauta became an international phenomenon since its release on April 30. Prominent figures from the country promoted its dissemination, sharing their enthusiasm for the series.
Regarding the first season, one viewer noted: "The drama, the acting, the direction, the artistic design, and the visual effects were exceptional. The central themes, an invisible enemy and a vast lurking force, recall the classics of 20th-century science fiction."
Despite the series' popularity, many viewers had not read the original comic from the 1950s. It was pointed out that the political instability of the time surely influenced the plot, turning El Eternauta into a masterpiece of Argentine science fiction.
The success of the series transcended borders, particularly in Japan, where fans of the card game truco related to the series emerged. The adaptation was praised for its slow and deliberate pace, generating expectations for the second season.
The Japanese dubbing and the quality of the audiovisual effects were also highlights for viewers. On social media, it was observed how the Japanese were trying to learn to play truco, despite initial difficulties.
Even renowned designers and video game directors, such as Hideo Kojima, joined in the enthusiasm for the series, sharing posts and images of El Eternauta and the Argentine flag on their social networks.
