The Mega Jet is a handheld portable device designed and manufactured by Sega.  Released exclusively in Japan, the partial handheld console was marketed towards airline travelers.  The Mega Jet was a portable version of the Sega Mega Drive that was available for rent aboard Japan Airlines (JAL).

The system debuted on the airline in 1993 and was later made available at retail outlets in Japan in 1994.  The console was semi-portable as the system lacked a built-in screen.  The device combined the hardware found in the Mega Drive console and integrated the components of a six button Mega Drive controller in a single unit.

Since the system required an external power supply and display it made it an ideal product for airlines to market as a form of entertainment for passengers at an additional charge.  When the system released in 1993 many Japan Airlines planes had small LCD displays installed into the armrest of each seat.  The system allowed passengers to play Mega Drive games to pass time on their flights.

Airline passengers were able to travel with their own Mega Drive cartridges and rent the Mega Jet system to use during flights.  Japan Airlines stocked a limited selection of titles on each flight in case passengers who were travelling without their own games wanted to rent the system.  Two of the common titles available on JAL flights included Ayrton Senna’s Super Monaco GP II and Sonic the Hedgehog.