The first one is basically squid game but less sad but more plot and big brain

Jus gonna copy paste two animes that are currently showing new episodes to show you that not all anime are the same; High school student Katagiri Yuuichi, who values friendship above all else, enjoys a fulfilling life with his close friends Sawagiri Shiho, Mikasa Tenji, Shibe Makoto, and Kokorogi Yutori. However, after a particular incident, they're dragged into a debt repayment game. The only way to beat the "Tomodachi Game" is to not doubt their friends. Bound together by solid friendships, the game should've been easy, but– The hugely popular comic that sold over two million copies is finally becoming an anime! Will they trust or betray their precious friends? The true nature of humanity is exposed in the ultimate psychological game! Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction. As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!