In terms of restoring the game and console, the resistance did a good job.
Let's talk about "technology" first ... Given that the level of technology in their era was far ahead, asking them to create game consoles and games from before the 21st century was like asking the scientists of the 20th century to build a steam engine.
As for the "knowledge" required to restore the game ... It was not a problem either. The "knowledge" acquired by metahumans was different from ordinary "memories". It was a very deep, clear, and accurate information ... Just like computer data. Moreover, almost all of this "knowledge" was about video games, because "video games" were the main target of the spire's destruction after changing the timeline. Therefore, the anti-correction effect brought by the space-time paradox was also aimed at this.
In summary, the engineers of the resistance had the ability to restore a game that had appeared in another timeline 100%.
