Play & Progress slot machines are typical grinder slots where you can unlock new bonus games and special features during the game-play. Your progress is also locally saved on the slot hence you'll always be able to start from where you last left off.
The queen of all play & progress slots and game studio Microgaming´s number one blockbuster. With 4 unique bonus games that requires cumulative game-play in order for them all to be unlocked and an epic randomly triggered feature, Immortal Romance have all the necessary components to be regarded as an absolute top slot
The theoretical return to player varies between 96-97% depending on your progress and choice of bonus games. Each main-game spin has the chance of activating the Wild Desire feature which on average turns 1-2 reels into fully stacked wilds, however if you are extremely lucky it could affect all 5 reels! This is an extremely appreciated random feature to have, whilst grinding towards unlocking all 4 bonus games in ‘The Chamber of Spins’.
Not many slots have a full chamber of free spin bonus games to choose from. To enter, you need a minimum of 3 scatter symbols. Initially there´s only 1 bonus game to choose from, namely the ‘Amber’ which rewards 10 free spins with a 5x multiplier. But as you progress through the game there are 3 additional free spin bonuses with a higher number of spins to unlock.
Each bonus game have its unique speciality, the ‘Troy’ bonus features random bats that change symbols into multiplier wilds, whilst for example the ‘Michael’ bonus gives 20 free spins with rolling reels. The fourth and last bonus mode ‘Sarah’, is not made available until after you've entered the chamber a total of fifteen times, but this is well worth it - we´ll let you find out why yourself.
Have a look at the Immortal Romance´s great game-play and a snap of all bonus modes in the video below.
A classic sins inspired slot from game studio Netent, that let´s you progressively collect souls until triggering its much anticipated ‘Sin Spins’ bonus. In addition, Devil's Delight slot features sinister sound effects, multiple bonus games and expanding wilds.
With a distinctively high theoretical return to player of 97.6%, Devil´s Delight is a true grinder slot. As with all theoretical return to player estimations it is based upon a large number of played rounds and it is important to anticipate the contribution a successful ‘Sin Spin’ round has on the overall payout percentage. To put it in simpler terms, we recommend that you play this slot with the sole goal of reaching the ‘Sin Spins’ and that usually takes quite a large number of bets.
To activate the wonderful ‘Sin Spins’ a total of 15 souls needs to be collected to the ‘Soul-O-Meter. This is accomplished from the bonus game activated by hitting 3 grim reapers on an active bet line on the last 3 reels to the left. Once the bonus game is on, your aim is to match 5 of the deadly sins with the corresponding sinner, giving the opportunity to claim between 1 and 5 souls.
The average of souls collected during a bonus round is 2, hence it can take a lot of grinding until the Soul-O-Meter is filled. But fret not, coins won from the soul collection, expanding wilds and the occasional free spins with multiplier makes it a fun ride. You can switch freely between your bet amounts whilst filling the meter, all wins ultimately made during during ‘Sin Spins’ will be rewarded based on an average of the bet amount placed to fill the meter.
The ‘Sin Spins’ themselves consists of 10 free spins with fewer, but higher value symbols hence its setup for success! Check the video below for a taste of it.
Tower quest is an online casino slot inspired by the popular Warcraft game series and Magic card board game created by game studio PlayNGo. Unlike the above game recommendations it has a more swiftly rewarding progressive mode, which can be manually activated at different instances, however the longer you let it progress the better the special reward.
Tower Quest slot has a theoretical return to player of 96.24% and one feature contributing a lot to the payouts is the tough, but really epic card boss bonus game that has a top win of 500x the bet. Triggered by hitting 3 magic wizards the bonus game takes you to face the wizard himself on a 3 deck card deal, hoping you'll draw the best minions that has both high stats in defence and attack to take his 10 life points down to 0.
There are 2 progressive bars that are actively filled during main game play through the collection of red and blue potions. Both of the bars can be activated at 3 instances, each rewarding different special features, making it a total of 6 unique feature modes.
Every 10th collected potion of a specific colour gives the possibility of activating a special feature, or wait and save the progress for once 30 all potions of a specific colour has been collected, on which the top special feature is activated automatically. Describing all the features here would both be both too time consuming and spoiling for your own thrill seeking, hence have a go at the slot yourself or start with checking out our feature highlight video.
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