What is the sin one must repent of to avoid aiding in disobedience through sharing pirated game files, especially given that others continue to download them?

To repent from sins that have widespread effects, you must make a general and comprehensive repentance for all sins, while striving as much as possible to remove the effects of these sins by clarifying the truth and offering sincere advice to those you assisted or guided towards evil. By doing so, your conscience will be cleared, God willing.