This may result in more stringent guidelines and restrictions on no deposit bonuses offered by online casinos in an effort to stop misuse. No deposit bonus online slots are still a well-liked option for players searslots spelenching for a low-risk method to play slots & possibly win real money without having to make a deposit, despite the fact that they have both advantages & disadvantages. Choose for Games with High RTP Percentages. Choosing slots with high return-to-player (RTP) percentages is one smart move. Seek for games that have an RTP percentage of 95% or above; these are more likely to offer regular payouts and increased chances of winning.