Season 0 of 記錄的地平線 premiered on November 11, 2013.

Season 1 of 記錄的地平線 premiered on October 5, 2013.

這裡是游戲的世界嗎？抑或是——異世界!? 3萬名日本玩家，受困於歷史悠久的在線遊戲——「幻境神話」的世界！與怪物的戰鬥、失去味道的食物、絕對不會死亡的際遇。直到昨天還只是遊戲的「劍與魔法之世界」，從今天起成為「現實世界」。在混亂的局勢之中，自負為獨行俠的城惠，即將與老友直繼以及美少女刺客曉，從廢墟城市「秋葉原」改革這個世界！

Season 2 of 記錄的地平線 premiered on October 4, 2014.

After being trapped in the world of Elder Tale for six months, Shiroe and the other Adventurers have begun to get the hang of things in their new environment. The Adventurers are starting to gain the trust of the People of the Land, and Akiba has flourished thanks to the law and order established by Shiroe's Round Table Alliance, regaining its everyday liveliness. Despite this success, however, the Alliance faces a new crisis: they are running out of funds to govern Akiba, and spies from the Minami district have infiltrated the city.

As formidable forces rise in other districts, there is also a need to discover more about the vast new world they are trapped in—leading Shiroe to decide that the time has come to venture outside the city. Accompanied by his friend Naotsugu and the Sage of Mirror Lake Regan, the calculative Shiroe makes his move, hoping to unravel new possibilities and eventually find a way home.

Season 3 of 記錄的地平線 premiered on January 13, 2021.

A year after the adventurers were blown into the Elder Tale world, Akiba's prosperity begins to teeter with the emergence of a new monster ("Genius"), a festering power struggle between the east-west aristocrats, and the growing gap among the adventurers themselves.

The Round Table, the symbol of their unity, faces a decisive crisis...