[Multiple worlds + collector's mentality + base building + female protagonist (non-human) + late-game troop buildup + system that's just going through the motions]

Ostro, a transmigrator, looked around and thought he had been reborn into a high-tech era, until he discovered Terra, Eldar, the Martian technological world, and the intelligent legions in his memories, and then he burst into tears.

Good news, we're in the Golden Age (dark technology); bad news, the Iron Man rebellion hasn't happened yet; good news, my parents in this body have some assets on Mars; bad news, they're both dead and I just cried myself to death.

Until the system delivered the gift pack, making me feel invincible with the cheat, and then the system, having delivered the gift, simply left.

At least it gave Ostro some hope, didn't it?

then:

Cult of Mechanics: How does he always manage to retrieve the complete STC template? He must be a Chosen One of Ohm Messiah.

Primal: A powerful, loyal, and resource-rich sage. We should try to get along with him. He has no other flaws except that he sometimes likes to steal the power armor from his minions.

All Astartes: Do you still want the power armor I just DIYed? You promised to trade it for 10 Terminators, can you still do that?

Tarasin: You're stealing my loot! Fine, you took my spoils, but how did they end up in my house?

(This is a new book by a new author, please forgive any shortcomings!)

Zhang Feng, who traveled through Naruto, obtained a blank version of the main god space, and thus began his journey to the main god.

"Orochimaru, do you want to know the meaning of life?"

"Uchiha Madara, do you want to bring peace to the ninja world?"

"Garp, I want..."

"Sesshomaru..."

The worlds are in complete chaos.

Naruto, One Piece, Attack on Titan, Dragon Ball, Pacific Rim, Curse, Fox Spirit Matchmaker... Countless worlds have welcomed the reincarnations of the worlds

[System + Clan + Invincible + Overbearing + Thrilling + Decisive and Ruthless + No Mary Sue + No Suppression]

Xiao Heqing transmigrates to a fantasy world, becomes the youngest clan leader, and obtains the Forbidden Clan System.

His strength is equal to the sum of all his clansmen.

His method is to return the investment, making big profits with small investments.

From a declining clan to a forbidden existence that strikes fear into the hearts of all realms.

Xiao Heqing: "I don't have any secrets, it's just that every one of my clansmen is a little bit better than others."

Lin Hao travels through time and space to Earth in the Devouring Stars world. At this point in time, the Great Nirvana Era is about to begin, Hong and Thunder Gods are just beginning to emerge, and it will be five hundred years before humanity discovers Earth's secrets. To survive in this primitive universe, where immortal gods are as numerous as dogs and cosmic respects are everywhere, Lin Hao resolutely opens the gate to the universe and conquers the Earths of billions of parallel worlds. Starting from the Devouring World, he gradually controls all the Earths in the universe and becomes the Lord of the Multiverse! Lin Hao: "Every world where Earth exists will be my territory!"