Rated 12% by Rotten Tomatoes (audience score of 39%) with the consensus opinion: "Sphere features an A-level cast working with B-grade material, with a story seen previously in superior science-fiction films".
Puntuado cun 12% por Rotten Tomatoes (puntaxe de audiencia de 39%) coa opinión consensuada: "Sphere presenta un elenco de nivel A que traballa con material de nivel B, cunha historia vista previamente en filmes superiores de ciencia ficción".