Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very poor effort, can't believe it's a series!

Little green lizards, none of which seems to have an IQ higher than the temp of ice water, are masters of the universe yet can't whip the mighty Earthlings of the 1940s. Gimme a break! And what's this drivel about them being hooked on Ginger? (The spice, not Tina Louise, though that would be just about as believable) I read this at first thinking it was written along the lines of the "Toxic Spell Dump". You know, a light little comedic romp. Then it dawned on me that Turtledove was actually trying to write a "serious" alt history. Too lame for me. Shine it on!