- Nintendo Hard: Some players have noted that campaign levels are unusually hard for a modern RTS game, but far from impossible. It is worth noting that even on the easiest difficulty, the game can be challenging in certain missions.
- So Okay, It's Average: In a time when the RTS genre was comatose at best and StarCraft II was more or less the only title worth mentioning, a lot of old-school RTS veterans were thrilled to learn that former Westwood personnel (of Command & Conquer fame) were releasing a new game that was advertised as a return to the roots. The resulting game did not perform quite as well as expected, leading to mixed ratings across the board due to what some felt as being a short campaign, poor optimization, or interchangable factions.
YMMV / Grey Goo (2015)