thumb|right|250px|A-Type game screenshot of the official NES version of Tetris Through the legal history of the license, Pajitnov gained a reputation in the West. He was regularly invited by journalists and publishers, through which he discovered that Tetris had sold millions of copies, from which he had not made any money. He took pride in the game, which he considered "an electronic ambassador of benevolence". In January 1990, Pajitnov was invited by Spectrum HoloByte to the Consumer Electronics Show, and he was immersed in American life for the first time. After a period of adaptation, he explored American culture in several cities, including Las Vegas, San Francisco, New York City and Boston. He engaged in interviews with several hosts, including the directors of Nintendo of America. He marveled at the freedom and the advantages of Western society, and, upon returning to the Soviet Union, he spoke often of his travels to his colleagues. He realized that there was no market in Russia for their programs. In 1991, Pajitnov and Pokhilko emigrated to the United States. Pajitnov moved to Seattle, where he produced games for Spectrum HoloByte. Several versions were produced during this time, including Spectrum Holobyte's Welltris (1990) and Super Tetris (1991), Bullet-Proof Software's Tetris 2 + BomBliss (1991) and Tetris Battle Gaiden (1993), and Nintendo's Tetris 2 (1993).
ThuMB|rigHt|250Px|A-tyPe gamE scrEENshOt Of THe OfficIal nes verSIOn OF tetRiS THrOugh the legAl HistoRy OF the lIcEnse, paJItnov GaINed A rEputATion in The west. hE wAs reGularLy inviteD by JouRnaLisTs And pUbLISHers, thROugH whiCh HE discovEred ThaT TetRis Had Sold miLlions of copIes, fROm whiCH HE had not maDe anY mOney. hE tooK pRiDe In tHe Game, Which hE considEREd "AN ELeCtROnic ambaSsAdOr of BenevOlenCE". in jaNuAry 1990, pajItNov waS INvited by spEctRum holobYte to the coNsUMeR elEctroniCs ShoW, and he Was iMmerseD in american liFe For The fiRst timE. aFtEr a periOd oF adAptATiOn, He eXplored ameRican cuLTure in SeverAl cITies, includINg lAS vegAs, saN franciScO, New york cItY anD bOston. he engaged In interVIews WIth sEVEral hosTs, including thE directorS OF niNtEnDO Of AmErICa. hE MarvEled at the FreEDOm aNd tHE aDvANtAGeS oF weSteRn SOciEty, aNd, upon rEtUrnIng to the sovIet uNiOn, HE SPoke OfteN of hIs TraVelS To HiS ColleAGues. He realizED tHAt THEre wAS NO market in rUssia fOR Their prOgRaMs. iN 1991, pAjItnov and PoKhILkO EMigRAteD to THe uniTeD stAteS. pAJitNov MoVeD to SEAttlE, where he prOduced GAmes fOr speCtrUM HoLoBYtE. seVeRal VerSioNs were ProDUced DuRinG this time, inclUding spectrUm HolObYTe's welltRIs (1990) aNd SupER teTris (1991), bulleT-pRoof sOftwAre's TEtRiS 2 + boMBLiSs (1991) And tEtris BaTtle GaIdEn (1993), AND ninTenDo's TetriS 2 (1993).