For most of the medium's history, the player on one console could not play with the player on another. The wall was deliberate: the platform the player bought was the platform the publisher wanted to lock them into, and cross-platform play would have weakened the reason to choose one console over another. That wall has come down, and its removal is one of the quietest but most consequential changes in how games are played.

The shift was not voluntary. The industry resisted cross-platform play for as long as it could, because the wall served a commercial purpose. What overcame the resistance was the cost of the wall itself — a cost that grew as games became more social and as the audience increasingly chose games based on where their friends already were.

The cost the wall imposed

A game that cannot connect players across platforms is a smaller game. The player whose friends are on a different console either buys a second console — increasingly unlikely — or plays a different game. Either way, the game that insisted on the wall lost a player it could have kept, and as the social dimension of gaming grew, that loss compounded. A game that lives on its community cannot afford to fracture that community by platform.

The wall also shortened engagement. A player who cannot play with their friends plays less, and a player who plays less is a player who stops spending and eventually leaves. The wall that was built to protect platform loyalty was, in the end, shrinking the games it was supposed to protect, and the publishers who maintained it were paying for the privilege of a smaller audience.

Why the wall came down

The removal was gradual and reluctant. One publisher allowed it for one game, then another followed, and eventually the holdouts could no longer justify being the only ones whose players could not play with their friends. The commercial case for the wall had reversed: the cost of maintaining it now exceeded the loyalty it was meant to secure, and the publishers who held out were simply losing players to the games that had opened up.

The technical work was non-trivial — account systems, progression, anti-cheat, and the business of reconciling different platform policies — but it was solvable, and once the first games proved it could be done, the expectation shifted. A new multiplayer game that does not support cross-platform play now faces criticism that it would not have faced a few years ago, and that criticism affects its reception.

The walls that remain

The wall for play has largely fallen, but the wall for progression has not. A player who can play with friends on another platform often cannot carry their purchases or progress to that platform, and that limitation is the next frontier the industry is beginning to address. The progression wall is harder, because it touches the economics of platform stores and the question of who owns a digital purchase, but the direction is clear: the players who expect to play together will increasingly expect to carry their progress together.

Cross-platform play is, in the end, a story about the audience winning an argument with the industry. The industry had reasons to maintain the wall, and the audience had a simpler demand: let me play with my friends. The argument took years, and the wall came down game by game rather than all at once, but it came down, and the games that resulted are larger and more durable for it. The walls that remain are the next ones to be lowered, and the same audience that won the first argument is already making it.