Wow, never was pissed so much at a game. It tells you you can ascent at 40 Hatcheries, and when you reach it, then it tells you you need 3 to 5 more days of senselessly using spells to create "rocket fuel" gained trough using 50 to 100 spells. As far as i know there is no way to gain that fuel earlier. Only reason for this "mechanic" is to force you to use more crystals. Seemed a nice game but leaves a really sour taste.