This is the Great Planes RealFlight 6 Upgrade for RealFlight versions G4, G4.5, G5 and G5.5.**Not compatible with earlier versions.**FEATURES: Choose from over 85 aircraft and more than 30 flying sites Developed with the aid of top R/C pilots for the ultimate flight physics accuracy New features include;*Reset Button that allows you to fly again instantly after a car or hold down the Reset button to rewind your current flight and resume flying from any point *Safety Alerts provides a checklist of safe flying practices to follow when flying your actual R/C model*Quick Loading, loading a new aircraft is super-fast-just start typing the name and choices are instantly displayed for selection*Quick Changes, with just a few keystrokes you can make simple changes to a RealFlight aircraft that make it fly even more a real model Airplanes;Albatros D.Va North American AT-6 Texan Dynaflite Super Decathlon ElectriFly BLT Park Flyer ElectriFly Edge 540 ElectriFly Edge 540T 3D XLC ElectriFly ElectroStreak ElectriFly FlatOuts Extra 300 ElectriFly Fundango ElectriFly PBY Catalina ElectriFly Slinger ElectriFly Yak-54 3D ElectriFly Cirrus SR22 Turbo Extra 300L Flyzone Beechcraft Staggerwing Flyzone Cessna 182 Skylane Flyzone Diablo EDF Flyzone SkyFly Flyzone SkyFly 2 Flyzone Switch Gary Wright Model Products E3D Gee Bee R-2 General Atomics MQ-9 Reaper Great Planes Big Stik Great Planes Big Stik w/Floats Great Planes CAP 232 Great Planes PT-40 Great Planes Space Walker Great Planes Super Sportster Great Planes Super Sportster w/Floats Great Planes Ultra Sport Hall Bulldog Harrier Hobbico ElectriStar Hobbico NexSTAR Hobbico NexSTAR w/AFS Hobbico NexSTAR EP Hobbico NexSTAR EP w/AFS Hobbico Twinstar L-39 Albatros Multiplex Easy Star Multiplex ParkMaster 3D P-51D Mustang Piper J-3 Cub Piper J-3 Cub w/Floats Russian Thunder Yak-54 Ryan STA Schneider Cup Racer Seawind Sig Seniorita Simple Flyer Skyship Sopwith Pup Sbach Thunderbolt 35% Top Flite Cessna 182 Skylane Tower Hobbies Extra Special Ultimate Biplane Wild R/C Mini IFO Yak-54 Sailplanes; Dynaflite Bird of Time Great Planes Fling 2-Meter Great Planes Spirit 100 Hawk Mistral 3m RF-97 Shuriken 60" Sloper Helis; Bell 222 Bell Jetranger Dominion 400 Dominion 450 Dominion 3D Dominion 3D 90 Ecureuil Heli-Max Axe 400 3D Heli-Max Axe CP Heli-Max Axe EZ Huey Mako F3C Miniature Aircraft X-Cell Furion 450 Schweizer Schweizer w/Floats Thunder Tiger Innovator Expert Tutor 600 Tutor 600 (Trainer) Westland Lnyx Flying Sites; Alpine Meadow Carl Henson Field Evergreen Airport Gold Country Aeromodeler park Grass Flatlands Grass Flatlands (Night) Lake Douglas Santa Clara County Model Aircraft Skypark Sod Farm Waco Field 3D Sites; Alpine Lake Apocalypse Boneyard Buena Vista Carnival Carnival (Night) Castle Castle HD Construction Site DS Ridgeline Flight School Flight School HD Flight School (Night) Joe's Garage Joe's Garage (HD) Marooned Observatory Obstacle Course Obstacle Course (Night) Palace RealFlight Ranch Sandy Point Shipwreck Sierra Nevada Cliff Soccer Field Soccer Field HD Thermal Park INCLUDES: Great Planes RealFlight 6 Upgrade Disc COMMENTS: RealFlight