Atari50ac-(usa)-nswtch-[base]-xci-ziperto.part2...

Right-click Part 1 and select using WinRAR or 7-Zip. It will automatically pull the data from the other parts to create the final .xci file.

ATARI50AC-(USA)-NSwTcH-[BASE]-XCI-Ziperto.part2.rar Quick Instructions:

For those looking to dive into the massive history of Atari, here is the next piece of the puzzle! This is part 2 of the base game for the Nintendo Switch. Details: Region: USA Format: XCI (Base Game) Platform: Nintendo Switch

It looks like you're sharing a part of the release for the Nintendo Switch. Since this is the second part of a multi-part archive, people downloading it will need to know a few things to get it running smoothly.