Han Yu went over the finer details of GTA with Ultron. To Ultron, it was a concept for a game that had yet to be born, but Han Yu had played it for a long time and knew its strengths and weaknesses inside and out.
He wasn't short of money now. As long as they made a good game, he would recoup his investment sooner or later, and it might bring him even greater profits.
A good game could bring in a staggering amount of revenue. In the Marvel Universe, where there wasn't a single AAA title, GTA was sure to be a huge hit when it launched.
Who knew how many teenagers would become addicted to it? There would surely be big spenders willing to shell out a fortune on equipment, too.
Han Yu and the others worked on the game from morning until noon. Ultron had a question almost every five minutes, and Han Yu patiently answered them all.
Having played the game himself, he had a more concrete understanding of some of the concepts in the development plan, so he could explain them more clearly.
Quicksilver helped out on the side. He had used his super speed to cram computer knowledge for several days, and although he still wasn't capable of making a AAA game, he could create simple items.
Ultron assigned him a few tasks, and so the two technicians and Han Yu, the game designer, discussed the project from morning until noon. If Wanda hadn't called them to eat, the three of them could have kept at it until the next day. When they were enjoying themselves so much, no matter how much time passed, they were happy.
At the table, Quicksilver kept asking about game items and what needed improving. Han Yu answered him one question at a time.
In the middle of their discussion, Han Yu suddenly frowned. His expression turned serious, and he sprang to his feet.
Quicksilver jumped, thinking he had annoyed Han Yu by asking too many questions.
"Boss, what's wrong? Is something happening?"
Ultron keenly noticed the seriousness in Han Yu's expression. He wasn't actually annoyed by Quicksilver's questions; it seemed something had happened.
Han Yu nodded and raised his left hand, gently turning his five fingers. The Mind Stone, which had been left behind after the battle in Sokovia, was glowing faintly yellow.
"What's going on?"
The Mind Stone's unusual behavior piqued even Wanda's curiosity. She had never gotten a close look at it before. When she and Quicksilver were test subjects, the stone had still been set in the scepter, so this was the first time either of them had examined it so closely.
"The stone is giving a warning. Normally, there are only two possibilities: either an incomparably powerful being has invaded Earth, or another stone has appeared on Earth!"
Han Yu narrowed his eyes and pondered. Of all the stones currently on Earth, aside from the Mind Stone in his own hand, only the Time Stone in Sorcerer Supreme Ancient One's possession remained.
But the Time Stone had long been kept inside the Eye of Agamotto, protected by a seal. Besides, it wasn't an aggressive stone, so the Mind Stone couldn't possibly be giving a warning because of it.
The Space Stone, which had previously been kept by S.H.I.E.L.D., had been taken back to Asgard by Thor after the battle of New York and placed in Asgard's vault.
The Power Stone should be inside the Orb that held it. He didn't know whether the Guardians of the Galaxy had found it yet.
As for the Soul Stone, the fact that it could only be obtained in exchange for the life of the person closest to you made it an Infinity Stone that could be said to be simple, yet very difficult, to obtain.
Han Yu rubbed his chin and, after a moment, reached a conclusion. "If time has changed because of me, then there's only one stone most likely to be involved in something happening on Earth right now."
"The Reality Stone!"
The name practically burst from his lips. Han Yu's eyes lit up slightly. Among the Infinity Stones, this stone's power was exceptionally practical.
Its effect was to alter reality. As long as its wielder was powerful enough, the stone could even turn the reality its wielder imagined directly into actual reality.
Against the vast majority of attacks, it could directly change the form they took.
For example, an opponent might unleash a flurry of flashy moves, with all kinds of effects and lights flashing everywhere. With a thought, the Reality Stone's wielder could turn those moves into a pile of bubbles. No matter how powerful an attack was, the stone had the ability to change it.
"The Reality Stone? What's that?"
The other three were all taken aback. They had never heard of the stone; it had never appeared in Earth's history.
"It's another one of the Infinity Stones. It can alter reality, turning the world into whatever its wielder imagines. It can't really be considered a stone, though. It's a kind of particle, and a long time ago, it was called the 'Aether.'"
"The Reality Stone once belonged to a race called the Dark Elves, but they wanted to use it to conquer the universe, so Asgard intervened. The father of the current All-Father Odin led a force that took the Reality Stone from them, then sealed it underground on Earth, where it's remained until now."
Wanda and Quicksilver were both amazed by the story, but Ultron said something that nearly made them spit out their food.
"What's so great about such a tiny planet that makes these aliens keep thinking about it? Why does everything have to be left on Earth?"
Han Yu burst out laughing at the complaint. Ultron was absolutely right. In terms of combat power, Earth was only average in the universe, and there were far too many planets with more advanced technology, yet somehow every major event liked to happen on Earth.
Han Yu said, "Anyway, that's probably why the Mind Stone is giving a warning. I'm going to Britain."
The three of them were puzzled. "Why Britain?"
"The Mind Stone indicated a place to me: the Greenwich Observatory in Britain. I need to retrieve it. Something like that is too powerful. Even if they can deal with it, it won't do any good if it isn't kept secure. It'll be best protected with me."
Han Yu couldn't tell them that the Reality Stone had appeared there in the movie he had watched in his previous life. With the Mind Stone in hand, he couldn't have asked for a better excuse.
Ultron and the other two believed him. After all, even Ultron, with his supercomputer, couldn't possibly fathom all the mysteries of the Infinity Stones.
Wanda asked, "Do you need us to come with you?"
"No, I can handle it myself. When you've finished eating, just carry on with what you were doing."
Han Yu tidied himself up, then went to the alley behind the general store. He pinched two fingers together, and the Green Lantern Ring appeared between them. After putting it on, Han Yu released a mass of Green Lantern Energy that enveloped him, then shot into the sky.
Under Han Yu's control, the green energy changed to match the colors of its surroundings once he was high in the air, rendering him invisible.
"Sir, the target appeared outside the general store and flew away using some kind of green energy. He's turned invisible, and our methods can't track him!"
"Stay where you are and keep monitoring the general store."