200 free spin on deposits of $100 and above is quite a tempting bonuse for most people but only those who take further read will discover that the winning from that free spin os paid out as a bonus and most be wagered 30x which look and sound almost impossible to win any thing and being able to finally withdraw any balance along the line.
Wagering requirement is standard terms for free spins bonuses and/or deposit bonuses which is not designed to give players +EV. It is always better to skip bonuses with wagering requirement unless players want to get their deposit locked until completing the wagering requirement. For me it is better to play with our own money so we can withdraw anytime without high wagering requirement (maybe standard 1x wagering requirement for deposit only which is applied).
Also I will like to ask ops, if the free spin is the only bonus available on the casinos and if no, what are the other bonuses that await players and what conditions will they be subjected to to meet those bonus demands?
This page is the place to get the answer of your question
https://cryptocasino.com/en/promotions. In short there are 3 on going promotions, you can check all the detail of each promotion yourself.
What's the amount referring to "otherwise"? Does it mean, 100 free spins will be credited even for a minimum deposit amount?
It must be related to the minimum deposit requirement to get the bonus which is 10EUR or equivalent in other currencies as what can be read in the bonus terms. It means that 10EUR deposit should be enough to get the 100 free spins @$0.1 per spin unless there is other terms that I missed when I read their bonus terms page.