The honest answer to crossplay has changed at least once, which is why old threads disagree.

Short answer

Crossplay and cross-progression are separate switches, and Rainbow Six Siege does not necessarily have both.

  • Confirm whether your friends are on the same build, not just the same game.
  • Verify controller support separately from platform support.
  • Region and platform change more than people expect, so confirm both.

Siege rewards knowing the building more than knowing the gun, which is why map knowledge outranks aim here. A cut-down port is still a port, and the difference usually shows up in player counts rather than frame rates. Cross-progression carries your account; crossplay only puts you in the same lobby.

Streaming as a fallback

Where something depends on your platform or region, that is called out rather than glossed over. Store pages list supported platforms accurately; trailers do not. Console certification adds weeks to every patch, which is why fixes land unevenly. Most of the disagreement you will find online is two people describing different builds.

Cloud streaming sidesteps the hardware question and introduces a latency one instead. Some features are disabled per-platform for reasons that have nothing to do with performance. If your result differs from what is described here, note what is different first rather than starting over.

How to check before you buy

Handheld versions often trail the main build by a full season. Rainbow Six Siege is not shy about hiding useful information two menus deep, so some of this is simply knowing where to look. None of this needs a paid tool, a third-party launcher or an account on a site you have never heard of.

  • Assume mobile versions are a different game with the same name.
  • Look for a cross-progression toggle in account settings before starting fresh.
  • If a menu path does not exist for you, your build is older or newer than the one described.
  • Check the store page's supported-platforms box, not the trailer.

What you lose on the smaller platforms

The awkward part is rarely the step itself, it is knowing which step comes first. There is no hidden trick here that the game is keeping from you. Half the pages on this topic were written for a build that no longer exists, which is why they stop matching what you see. If you are coming to this after a long break, the terminology has probably moved on.

Nothing here assumes a particular playstyle beyond wanting the thing to work. Patch notes move numbers around constantly; the shape of the answer holds even when a specific value shifts. If a step reads as obvious, do it anyway — the obvious ones are the ones people skip and then wonder about.

Which versions exist right now

The short version is near the top on purpose; the reasoning is there if you want to know why. There is usually a fast way and a reliable way, and it is worth knowing which one you are choosing. Do the cheap check before the expensive one — that ordering alone saves most of the frustration.

The developers have changed their mind about this at least once, which explains the older advice. Treat anything stated without a version number as provisional. Anything that behaves differently on console than on PC is flagged where it matters.

Crossplay versus cross-progression

What follows assumes you are on a current install and have not modified it. Where two approaches both work, the one with fewer moving parts is the one to keep. Everything below is framed around the current state of Rainbow Six Siege rather than a launch-week impression.

Where people go wrong

  • Treating a rare edge case as the normal behaviour and planning around it.
  • Ignoring the platform-specific note and then wondering why the steps do not line up.
  • Skipping the prerequisite because it looked optional in someone else's summary.
  • Trusting a video thumbnail that promises a result the video never actually shows.

Siege FAQ

What if none of this works for me?

Then something in your setup differs from the assumption — version, region or platform. Check those three before anything else.

Will Rainbow Six Siege come to the platform I own?

If it has not been announced, treat it as no. Ports get announced long before they ship, never after.

Can I play with friends on a different platform?

Only if crossplay is enabled for that mode. Some modes in Rainbow Six Siege allow it and some deliberately do not.

How long does this take?

Minutes if it goes cleanly, an evening if you hit the edge case in the caveats list. Neither is unusual.

Bookmark it if you like, but honestly, once you have done it once you will not need to come back.