On 26th April 2017 the Lost Alpha Developer's Cut was released with version v1.4000. The developers decided not to release a patch v1.3004 because 'it became more and more clear we need to release the developers cut, because the content we were planning was simply bigger than a patch'. For this version three patches were released, v1.30013 (also referred to as v1.3001), v1.3002 and v1.3003. The first version of the game was the v1.3000 which marked the start of Lost Alpha being available for everybody. On the 26th April 2014 the game was released titled as being 'early access' and that it needs still some tuning. In March and April 2014 it was reported that the game was leaked on some file-sharing websites and that it got already downloaded.
In 2014 it was planned to release the Lost Alpha as an official add on for S.T.A.L.K.E.R.: Shadow of Chernobyl. After a while, it became more than just a modification, it became a new standalone game. The project first started out as a modification to add back the cut levels which all Stalker fans knew of. The development of the Lost Alpha started in the summer of 2008.
