Warning Alien Activity in the Area! In four easy steps you can hatch and grow your very own Large Alien! Step 1: Beam your egg in jug or container and add H2O (water). 2: wait 24 - 48 Earth hours and watch the egg crumble away.3: After 72+ Earth hours your hatching will begin to emerge. Step 4: GROW GROW GROW! - Collect them all!