Light Phaser: point with the mouse and click to shoot, or tap the screen on a touch device.
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Snapshots of the whole console, saved and loaded from the dock.
The game shows each eye every other frame, for the SegaScope 3-D glasses. Here the two pictures are paired up and their depth worked out, so the scene can be seen from anywhere.
Models in the bedroom: "Sega Master System" (https://skfb.ly/6vvYH) by SteveTheDragon is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/). The Light Phaser and 3-D glasses are "Sega Master System Light Phaser and 3D Glasses" by jgohlke, CC BY-SA, given a thickness and scaled here. The Touch controllers are from the WebXR Input Profiles, copyright 2019 Amazon, MIT license; other controllers' models load from there too. Star Wars, The Walking Dead and Marvel belong to their owners; the posters and comics are drawn here as tributes.