Always look for a bonus with lower requirements. If you’re lucky, you might find a bonus with no requirements at all. These are few and far between, but they do exist.
Slot RTPs
The final consideration should be the actual games that the bonuses are attached to. This is usually only a necessary point when it comes to free spins and the slot games they are linked to. You should always check out the return to player rate or RTP of a slot. The RTP is the theoretical amount you would get in return after playing with $100. So, a slot with an RTP of 95% will theoretically payout $95 over a series of spins.
Armed with this knowledge, it’s then a better option to choose free spins attached to slots that have an RTP of 95% or higher. This means that, although theoretical, you have a better chance of getting some wins during play.
Following on from this, you should look at the specific slots attached to free spins and if they’ve got a low RTP and/or are from an unknown provider then it might be best to avoid them. Instead, choose bonuses attached to well-known slot games, with good RTPs.
Choosing a slot based on its volatility level can also be helpful in these instances, but this is more down to your personal preference. A low volatility slot will offer regular, but low-paying wins. In contrast, you might score a big win on a high volatility slot, but it won’t happen very often resulting in dry spells. Given that there are win limits for most of these games, it’s generally better to opt for a mid to low variance slot and just keep those wins ticking over.
Trends on casino bonuses
As the popularity of online casinos has grown, so has the desire for bigger and better casino bonuses. Land-based casinos never gave bonuses so, already, the world of casinos has changed. Now, it would be very strange to find an online casino that didn’t offer anything extra to its players.
In recent years, there has also been a change in the way we access online casinos. Mobile phones have become more important, with many people accessing online casinos through this platform instead. With this in mind, many online casinos have made sure that their bonuses work across all platforms. In a growing number of casinos, there are also mobile-specific bonuses too, eligible only for those who deposit and play their games via the mobile browser or app for that casino.
Other changes within the world of online casino bonuses involve the size of the 
bonus. Welcome offers are actually getting bigger due, in part, to the increased competition from other sites. With these bigger bonuses, more players are encouraged to sign up to a casino and check out what they have to offer.
Finally, bonuses are being offered in ever more inventive ways. A number of casinos have made the jump to gamification within their bonuses. Some casinos take this down the tournament route, offering players big prizes for playing against other players. Other operators have added missions to their sites. Players that fulfil these missions often provided on a daily or weekly basis, will then get rewards for doing so. In some cases, casinos are also opting to give players a choice of bonuses when they sign up, giving players a more tailored gaming experience.
Why casinos give casino bonuses
At this point, you might be wondering why casinos actually give bonuses away, especially when they could stand to lose. Well, they give them away because there’s more to gain in the long run. Casinos are all about trying to encourage players to join their site. But, more importantly, they want to be able to keep the players there, coming back time and time again. By offering welcome deals, they encourage players to actually make that first step and join up.