'Christmas Train', an animated 3D model. Works with 'BBC BASIC for Windows' and 'BBC BASIC for SDL 2.0', or you can run it in your own browser here (in Facebook's mobile app use 'Open in external browser'): https://wasm.bbcbasic.net/bbcsdl.html?app=bbcbasic.co.uk/webapps/train Source code (part 1): 10 REM Christmas Train by Richard Russell 08-Dec-25 20 REM 'Wooden Train' 3D model from turbosquid.com 30 REM MUST NOT BE REUSED WITHOUT BEING REPURCHASED 40 50 VDU 23,22,1280;720;8,16,16,0 60 IF INKE

Animated dodecahedron (12 pentagonal faces, 20 vertices). This will run in 'BBC BASIC for Windows', 'BBC BASIC for SDL 2.0' or 'Matrix Brandy BASIC'. Alternatively you can run it in your browser by following this link (in Facebook's mobile app use 'Open in external browser'). Click 'Fullscreen' for best effect. https://wasm.bbcbasic.net/bbcsdl.html?app=bbcbasic.co.uk/webapps/dodecahedron 10 REM Animated dodecahedron in BBC BASIC 20 REM!Keep Phi,phi 30 40 MODE 9 : OFF 50 ORIGIN 640,512 60 70 REM