Originally Posted by lelim

at first few versions, we had users mostly from europe, and mostly from germany. then night-time credits were already 7, and some night-time captchas were not solved, because there were not much users on night time, according to euro time zone. so we increased night-time credits to 10 to give extra points to users who are online at night. but now, we have users, more uniqely distributed on asia, europe and america. so, we have enough users online 7/24. giving extra credits on some time intervals started to mean extra credits for some users, even its not night time in their country. so, we changed it back. but its still subject to change depending such criteria.