Glenn Astarita at All About Jazz gave Planet X a positive review, calling it "prog-rock heaven with a few fusion bites thrown in for good measure" and "A highly entertaining effort featuring some almost superhuman ensemble work". He praised the "strong compositional and arranging skills" of Sherinian and Donati, and the "crunching guitar work" of Garsed.[5]
Steve Huey at AllMusic gave the album three stars out of five. He, too, praised each musician's performance, as well as likening the compositional influences to that of Steve Vai and King Crimson.[3]
Track listing
All music is composed by Derek Sherinian and Virgil Donati, except where noted