Endsights writes: "It's weird that Crystal Defenders turned out the way it did. Games with the title of Final Fantasy or games baring a similar theme have an expected level of quality to them. This is not one of them. The challenge is oddly addicting and the theme does have some charm, but if you've played one level you've pretty much seen the whole game. The twelve levels look remarkably similar and there isn't much enemy variety. The only thing you can do is place units on a map, upgrade them for more attack power and reach, then hope for the best. While the game can be fun, there is little to no reward for any of it".