Transmigrated to another world, I'm a programmer. Pay me? No, patch me! What to do when I discover the magic system is riddled with bugs? I need help urgently! So, I optimized the fireball spell, invented the magic gun, and equipped the elven knights' shields with a "counterattack program." While others were diligently practicing spells, I was fine-tuning parameters; while others were searching for artifacts, I was coding cheats. Demon infiltration? Racial conflict? Kingdom wars? Before absolute technical power, they are all system errors that need fixing. Sorry, this other world has been rebuilt by me.

[Harem][Multiple Heroines] Jiang Yan is reborn in the world of Swallowed Star, obtaining the [Heaven Rewards Diligence] system. Every effort yields a reward! Furthermore, there's a critical hit rule, with rewards reaching billions of times! [Ding! Your diligent cultivation of the Ninefold Thunder Blade has triggered a critical hit rule, granting you a hundredfold reward!] [Ding! Your diligent cultivation of the Void Tower has triggered a critical hit rule, granting you a thousandfold reward!] [Ding! Your diligent cultivation of the Thunder Domain has triggered a critical hit rule, granting you ten thousandfold reward!] [Ding! Your diligent cultivation of the Ranks Technique has triggered a critical hit rule, granting you billions of times reward!] Years later, when Jiang Yan stands atop the Primordial Chaos, someone asks, "How can one become like you?"

A failed transmigrator is reborn, luckily arriving in the world of Fairy Tail. Possessing the cheat ability to analyze extraordinary powers, Hope is determined to reach the pinnacle this time. Slaying dragons, vanquishing evil, destroying gods... Law, shattering, imbuing... All magic will be mine!

Luo Yao was reborn as a red dragon hatchling in the Sel plane. In a world fraught with danger, relying on the mysterious ancient bronze book within his soul, Luo Yao could reflect and condense countless 'avatars' across numerous planes of the astral plane, gaining numerous innate talents. Reflecting on a goblin, he gained the talent—Tenacious Evolution; reflecting on a human mage, he gained the talent—The Heart of the Mage; reflecting on the vampire progenitor, he gained the talent—Primordial Blood; reflecting on an ancient divine abomination, he gained the talents—Devouring Divinity. He became the Goblin King, a legendary mage who slays gods, a vampire progenitor shrouded in darkness and worshipped by billions of vampires, an ancient divine abomination that devoured divine kingdoms and instilled fear in the gods, and countless other identities... When a plane war erupted between the gods of all races, Luo Yao suddenly discovered that his avatars were spread across various pantheons and races. The human pantheon,...

Qi Tian was reborn into the Douluo Continent, awakening the Blue Silver Grass Martial Soul with an innate Soul Power of 0.5. With such aptitude, even becoming a Soul Master would be difficult, leaving Qi Tian resentful. Fortunately, he possessed a system, allowing his soul to possess the bodies of geniuses in parallel worlds, cultivating by borrowing their talents. [Possessing Bibi Dong, reward: Second Martial Soul.] [Possessing Liu Erlong, reward: True Dragon Physique.] [Possessing...] "System, didn't you say parallel worlds? Why are they all acting strangely?" [Douluo Continent Fanfic]

A letter from Grandpa arrived from afar, saying there was a farm for me to inherit. So Matthew went and started planting parsnip. But what's with this owl? Hogwarts? Ah, of course, of course, I love Hogwarts' greenhouses! I'm a peaceful farming enthusiast! But, Mr. Voldemort, why are you stepping on my land?

[Fate][Female-dominated][Crossdresser][Type-Moon][Xiao Nan Girl][Females outnumber men]

(The text in parentheses at the beginning of Chapter 1 is so beautiful! So beautiful! So beautiful! I'm saying it three times because it's important... Otherwise, I know you readers will have a lot of questions.)

He was reborn in England at some unknown time, becoming a prince named Astolfo, and was also bound to a system.

In a world where men generally have a lower status than women, I, as an only child, have been dressing as a woman since I was a child, and I am even about to marry a prince from another country!

The prince was said to be incredibly handsome, and the women who wanted to marry him could line up from Britain to Rome.

The problem is, I'm a man, how can I marry another man?!

…………

Artoria Pendragon has recently encountered a difficult situation because her teacher, Melie, is urging her to get married as soon as possible.

To avoid Sister Wang's hostility, she had been pretending to be a man since she was a child, and now that she has reached the right age, it is indeed time for her to get married.

The problem is, she's a woman! How can she marry another woman?!

And so, the prince, disguised as a woman, ran away on the eve of his wedding to the beautiful woman, who was disguised as a man!

"In conclusion, historically, King Arthur and his lover Astolfo were never truly in love, and as their Master, I absolutely cannot condone such a marriage!"

"So, Ah Fu, please marry me!"

"Master, you..."

Astolfo hesitated, looking at the drooling Gudako getting closer, wondering whether he should remind her that a bunch of Saber and Heroic Spirits with murderous expressions were standing behind her.

Sakurai Sora travels to the world of Detective Conan and becomes Shinichi and Ran's childhood friend.

He thought it was just an ordinary high school student's daily life, until a car accident awakened his [Absolute Memory].

I thought this was already a cheat, but I never expected it was just the beginning!

Witnessing the roller coaster murder, he saw the colors of fate between people;

Drinking the poisoned coffee unexpectedly unlocks [poison resistance];

To save Ayumi, he instantly mastered [Fighting Mastery] and [Teleportation]!

Abilities are randomly loaded with no discernible pattern! Each time you get involved in an event, you may unlock outrageous new skills.

Shinichi Kudo: "Who are you? This is completely illogical!"

Sakurai Sora looked at the shrunken high school detective in front of her and helplessly shrugged: "Would you believe me if I said my superpower is to change size at will... oh no, I mean, to randomly load my size?"

Faced with a complex case and a lurking black organization, Sakurai Sora says, "Let's put the case aside for now. My new ability this time... seems a bit too abstract!"

This is a story about someone with random cheat codes trying to survive in Beika Town and attempting to maintain logic in the world of Detective Conan using their mystical abilities.

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(Infinite Flow) (Anime Crossover) (Game) (Harem)

The protagonist, Xia Xingci, transmigrates to a god-like space filled with public spaces like plazas, exchanges, and arenas, and teeming with top-tier experts. Here, a survival-of-the-fittest system prevails; those who don't grow stronger will die. As the weakest among them, the protagonist immediately faces the god's annihilation.

Fortunately, the first instance that Xia Xingci, a pure-blooded human, entered was NieR: Automata, where the androids left behind by humans fought for the glory of humanity.

During this process, the protagonist also gained the favor of YoRHa II Type B.

2b: "I will fight not only for your glory, but also for your freedom. Take me to the God Realm."

(The protagonist follows a technological advancement path, primarily focusing on cybernetic body modification.)

(The dungeons involved include, but are not limited to, NieR: Automata, the game version of Life)

Resident Evil (the movie version), Highschool of the Dead, Metal Gear Solid, IS, To Love-Ru, Gundam SEED, Gundam 00, Gladiator, Bayonetta, the Fate series, the Final Fantasy series, etc.