Console commands do not exist on Xbox 360 or PS3 versions of Fallout 3, including the Game of the Year Edition. The developer console (~ key) is a PC-exclusive debugging tool.
tgm (god mode), tcl (noclip), player.additem, coc (teleport), setscale, killall, etc.setstage), no custom FOV, no disabling HUD for screenshotsPlay on PC (Steam/GOG/Game Pass). Fallout 3 runs on integrated graphics. Use Fallout 3 Script Extender (FOSE) + Unofficial Patch for stability. Then press ~ and go wild.