Garden of Eden Creation Kit The Garden of Eden Creation Kit ( G . E . C . K . ) was a terraforming device created by Future - Tec , a division of the Vault - Tec Corporation . Its purpose was to revitalize areas of a post - nuclear wasteland . The concept of the device as well as its design was completed by Doctor Stanislaus Braun , a brilliant , if egotistical , Vault - Tec researcher . Characteristics . The Kit has the appearance of a small , silver briefcase emblazoned with the letters " G . E . C . K . " ; according to Vault - Tec advertisements , it contains all the seeds , fertilizer , and other equipment ( including a cold fusion power generator and a basic replicator ) necessary to start a new settlement in a post - nuclear world after emerging from a Vault shelter . Each Vault was presumably issued with two GECKs , except for Vaults 8 , 13 , 112 , 111 , and 101 ; Vault 8 ' s extra GECK got swapped ( whether by accident or some nefarious scheme , this is not known ) with Vault 13 ' s surplus water chips that had been ordered as backups . Vaults 112 and 101 were never issued GECKs because they were never intended to be re - opened ; each was an experiment in permanent confinement . The Garden of Eden Creation Kit is a device capable of radically altering the Wasteland and transforming dead , irradiated soil into viable land suitable for farming ; it is implied , though not confirmed , that this is the usual mode of operation for a GECK in Fallout 2 . However , there is significant disagreement as to what a GECK actually does ; the only time we see one properly in action ( rather than merely the results ) is in " Fallout 3 " . Actual contents . The GECK was built as a matter - energy replicator and miraculous terraforming device , transforming an area into energy and then reforming it according to a certain molecular pattern . Certainly , the actual devices built to the specifications of Stanislaus Braun , Vault - Tec ' s " Sorcerer - Scientist " were such . As a way to reconcile these two differing accounts of the GECK - the way it was originally intended , and the way the latter - day games portray them - one could say that only a few GECKs were actually built to spec , with the others being mere " promotional copies " to hand out to West Coast Vaults . However , even if the GECK is taken at face value - that is , if they were indeed the miracle devices promised by Braun and Vault - Tec - they would be consistent with the portrayal in Fallout 2 , as seen at Vault City and New Arroyo . " Fallout 2 " . The tribals of the town of Arroyo , which was founded by the Vault Dweller , passed down stories of the " Holy GECK , " which they came to believe was a sacred , magical item which can change the Wasteland into fertile land again . Though the GECK may not have been the holy cure - all the tribal inhabitants of Arroyo believed it to be , in the right hands it was a very useful piece of pre - War technology that could help establish a viable new community in the post - nuclear wastelands . Alternately it was indeed a miraculous device , capable of terraforming the Wasteland into something far more . Either way , after the destruction of the Enclave Oil Rig , the dwellers of Vault 13 rescued from the Oil Rig used it to rebuild Arroyo . The GECK was instrumental in the creation of Vault City by the former inhabitants of Vault 8 ( though whether the city ' s success can be attributed to the GECK alone is debatable ) . By combining their GECK ' s contents with power from Vault 8 ' s fusion generator , the residents of Vault City were able to erect their settlement ' s first buildings and generate arable farmland . " Fallout 3 " . When the Lone Wanderer locates his / her father in Stanislaus Braun ' s Vault 112 , he / she learns that in order to make Project Purity work properly , he / she requires a G . E . C . K . After James ' demise , the Wanderer makes their way to Vault 87 , a horrendously irradiated location , where they acquire a G . E . C . K . unit . It seems that no other vault in the Capital Wasteland was issued a G . E . C . K , hinting that very few vaults were supplied with one , possibly due to the price of each unit . There is also no indication of any Vault s in the Mojave Wasteland having a G . E . C . K . , nor is there mention of a G . E . C . K . in most vaults that have been mentioned in - game or in the Fallout Bible . This version of the G . E . C . K . is a far more advanced piece of technology than the implied agricultural starter kit the developers of the previous games intended it to be . In this case , when included as a component within Project Purity ' s Purifier , the G . E . C . K . helps that other technology remove all radioactive particles from the water of the River Potomac that flows through it . In " Fallout 3 " , it is possible for the Lone Wanderer to reach the GECK instead of allowing Fawkes to retrieve it , thus allowing the player to activate it . If activated on its own , a blue energy ball expands around the GECK killing the player ' s character and , after a burst of white light , the nearest save game is loaded . " Fallout 4 " . Curiously , no mention is made of the G . E . C . K . supplied to any of the Commonwealth vaults . Mutant GECKs . The stories of " Fallout Tactics 2 " and " " were to revolve around " mutant " GECK units , which had become infected with radioactive pathogens and caused mutant plant and animal life to expand and consume huge swaths of land . While the origin of the " Tactics 2 " GECK is unknown , the GECK in " Brotherhood of Steel 2 " was found by a former Cypher called Miles Reese . In both situations , the GECKs were " terraformer " type units , like the " Fallout 3 " GECK . " Fallout : Brotherhood of Steel 2 " . Miles Reese was conducting research into the GECKs capabilities , which led him to the Nursery where he stole a prototype GECK with the hopes of terraforming the wasteland into a new , greener , and human free " Eden . " The GECK , still not quite mastered by Miles , created a patchwork of lush vegetation in the areas he travelled through . Upon reaching the Gulf of Mexico , Miles toiled with the GECK for five years , greatly magnifying its effects , not concerned with the immense effects it was capable of when combined with an FEV environment . The GECK could now terraform on a dangerous scale , including within enclosed structures , and occasionally produced carnivorous plants . It could generate unnatural weather patterns and his experiments created jungles within deserts , and the Gulf , who ' s water had apparently retreated a considerable distance , re - flooded on an even larger scale . As Miles continued to tinker with the GECK its capabilities became sharpened and could focus its power into more specific tasks such as protecting Miles ' base , the Corpse , with an organic shell . Armed with an extremely dangerous and refined piece of technology , or New Eden device as he referred to it , Miles continued with his ultimate goal . He went on to exploit the Jackals to his own end , all the while planning to eliminate them with biological mini - bombs which detonate at his command created by the GECK that he infected them with . A second GECK was found by the player character in an Austin gas station , which they would go on to use to overload Miles ' mutant GECK causing a devastating explosion . It seems a combination of continual exposure , self - augmentation experiments and control over the GECK altered Miles into a being capable of symbiotic relations with the plant life it generated , vines protruded from his person and he was capable of merging with the plants themselves . As the SDK . The " Fallout 3 " SDK ( Software Development Kit ) , called " The G . E . C . K . " , has been released and is up for download at the official " Fallout 3 " website . It is also available for " Fallout : New Vegas " .