Game Dev Tycoon does not use DirectX, therefore a recorder which attempts to hijack the video processing information is not likely to work directly. Some recorders, like Fraps, have a mode which allows you to record the desktop in Windows Vista and above, since the desktop itself is rendered using DirectX (in Aero mode, at least). Failing that, Livestream and Twitch.tv compatible recorders seem to have been used successfully in the past.
