▁one ▁rev iewer , ▁Gl enn ▁Er ick son , ▁A IP ' s ▁ed its ▁and ▁script ▁changes ▁were ▁intended ▁to ▁create ▁a ▁g imm icky ▁" sur prise " ▁ending , ▁reve aling ▁that ▁the ▁I kar ie ▁and ▁its ▁crew ▁have ▁come ▁from ▁an ▁al ien ▁world ▁and ▁that ▁the ▁" Green ▁Planet " ▁is ▁in ▁fact ▁Earth . ▁ ▁Re ception ▁I kar ie ▁X B - 1 ▁was ▁a ▁hit ▁at ▁the ▁ 1 9 6 3 ▁Tri este ▁Science ▁F iction ▁Film ▁Festival ▁where ▁it ▁won ▁the ▁main ▁prize . ▁and ▁it ▁is ▁now ▁widely ▁regarded ▁as ▁one ▁of ▁the ▁best ▁science ▁fiction ▁films ▁of ▁the ▁era , ▁bo ast ing ▁impress ive ▁ ▁production ▁design , ▁above - aver age ▁special ▁effects , ▁a ▁strong ▁ensemble ▁cast ▁and ▁an ▁intellig ent ▁screen play ▁( although ▁much ▁of ▁the ▁subt le ty ▁of ▁the ▁original ▁is ▁lost ▁in ▁the ▁English - language ▁version ). ▁ ▁In ▁a ▁B FI ▁South bank ▁ret ros pective ▁on ▁Soviet ▁science ▁fiction ▁film , ▁British ▁director ▁Alex ▁C ox ▁pra ised ▁I kar ie ▁X B - 1 ▁calling ▁it ▁" be aut iful ▁and ▁aust ere " ▁and ▁" rem ains ▁one ▁of ▁the ▁most ▁original ▁and ▁exc iting ▁science ▁fiction ▁films ▁ever ▁made ." A ▁mag az in ▁C ine outs ider ▁called ▁it ▁" a ▁g ri pping , ▁entertain ing ▁and ▁character - dri ven ▁drama ". ▁ ▁Author ▁Trace ▁Red d ell ▁wrote ▁in ▁his ▁book