A computer system for presenting a local multiplayer experience for a multiplayer game that lacks local multiplayer support, comprising: one or more processors; one or more user input/output (I/O) interfaces; a display interface; and a hardware storage device that stores computer-executable instructions that are executable by the processor to cause the computer system to perform at least the following: establish a plurality of game streams, in which: each game stream comprises one or more downstream data channels and one or more upstream data channels, each game stream corresponds to a different instance of the multiplayer game, which includes remote multiplayer support, but which lacks local multiplayer support, and each game stream corresponds to a different user identifier of a plurality of user identifiers, each of the plurality of user identifiers being joined to a single multiplayer session of the multiplayer game using the remote multiplayer support of the multiplayer game; identify a plurality of gaming interface devices connected to the one or more user I/O interfaces; associate each of the plurality of gaming interface devices with a different game stream of the plurality of game streams; output, to the display interface, a composite stream of the plurality of game streams that simultaneously includes each of the plurality of game streams in a split-screen display format for display at a single display device; and while outputting the composite stream of the plurality of game streams, causing one or more input signals received from each of the plurality of gaming interface devices to be routed to its associated game stream and outputs generated by each gaming stream to be routed to its associated gaming interface device. one or more processors; one or more user input/output (I/O) interfaces; a display interface; and a hardware storage device that stores computer-executable instructions that are executable by the processor to cause the computer system to perform at least the following: establish a plurality of game streams, in which: each game stream comprises one or more downstream data channels and one or more upstream data channels, each game stream corresponds to a different instance of the multiplayer game, which includes remote multiplayer support, but which lacks local multiplayer support, and each game stream corresponds to a different user identifier of a plurality of user identifiers, each of the plurality of user identifiers being joined to a single multiplayer session of the multiplayer game using the remote multiplayer support of the multiplayer game; identify a plurality of gaming interface devices connected to the one or more user I/O interfaces; associate each of the plurality of gaming interface devices with a different game stream of the plurality of game streams; output, to the display interface, a composite stream of the plurality of game streams that simultaneously includes each of the plurality of game streams in a split-screen display format for display at a single display device; and while outputting the composite stream of the plurality of game streams, causing one or more input signals received from each of the plurality of gaming interface devices to be routed to its associated game stream and outputs generated by each gaming stream to be routed to its associated gaming interface device. each game stream comprises one or more downstream data channels and one or more upstream data channels, each game stream corresponds to a different instance of the multiplayer game, which includes remote multiplayer support, but which lacks local multiplayer support, and each game stream corresponds to a different user identifier of a plurality of user identifiers, each of the plurality of user identifiers being joined to a single multiplayer session of the multiplayer game using the remote multiplayer support of the multiplayer game; identify a plurality of gaming interface devices connected to the one or more user I/O interfaces; associate each of the plurality of gaming interface devices with a different game stream of the plurality of game streams; output, to the display interface, a composite stream of the plurality of game streams that simultaneously includes each of the plurality of game streams in a split-screen display format for display at a single display device; and while outputting the composite stream of the plurality of game streams, causing one or more input signals received from each of the plurality of gaming interface devices to be routed to its associated game stream and outputs generated by each gaming stream to be routed to its associated gaming interface device.