I could basically write the exact same review as Lucy E. below, dunno why i didn't take the kids here before. Buy one get one free coupon on their own website made it well worth it. For $15 it got myself, the wife and 1 and 3 year old in.
Egypt maze with kids was great. Lucy says it with kids and flashlight being a hit. Kids loved the aquatics area, dinosaurs, taxidermied animals and all too.
For as much as I complain that I wish Las Vegas had a better community culture, this was a gem I was missing. Would definitely take the kids back again in 6 months to a year. Or if any interesting exhibits come.