The phrase "mixed reception" means that something or someone is received differently by different people. Some may like it, while others may not. Full definition
Both versions of the game have received mixed reception. (mariowiki.com)
Since their announcement, players were excited and concerned with mixed reception about if this would be a successful crossover or not. (dualpixels.com)
Generally the game didn't fare too well in magazine reviews of the day and from what I can see online today the game still has a very mixed reception with gamers. (insert-disk.com)