The investment is going towards vps, the casino script, setup, management and bankroll.
The amount needed is 10btc and the ROI will be 200% within 6 months.
It looks like a poor way to scam people , a casino will logically need much more then what you mentioned to keep paying users daily . Casino script shouldn't cost anything If you are copying it from Github which may contain some backdoors btw, If you are building a new one from scratch then It may require even more money - mostly for the security. Basically , you are asking the wrong amount which make it look like you are not looking for anything except your personal interest.