Reviewing the futuristic Machina slot game let me start with the important stuff. The theoretical return to a player goes from 96.59% up to 97.42%. The regular game has the 96.59% and the Buy free spins function starts with 97.20% (10 initial spins) and ends with 97.42% (18 initial spins).

This means you are highly motivated to buy as many free spins as possible but there is a catch. The minimum price you pay for the extra 18 free spins is over £200. So what is your choice? Do you pay big money for the extra % you get or do you enjoy the game? To me, this feature and price has slightly bitter taste.

Besides that I have to stop and meditate the words Free Spins. Just the notion of paying and then getting something for free is kind of not right.

Jackpots are included

There are 3 possible jackpots to look forward to:

  • Silver Jackpot
  • Gold Jackpot
  • Platinum Jackpot

If you look at the size of the price money, you realize that Machina slot is not a progressive jackpot slot.

The design is decent, animation perfect, sounds is slightly depressing but overal feeling of the Machina slot is fine. We at Spincastle are giving a high rating.


Play this game for free

The game will be loaded below. Please, be patient as loading this game could take a few seconds. If you experience any problems you can reload the game.


Play this game for real money

Click on any casino button if you would like to try to play for real money. You will be redirected to the casino page where you can register and enjoy playing.

Mr Green

Game Info

Casinos Mr Green
Game Platform Kalamba Games
Ways to Win46 656
Min / Max Bet0.60 - 36.00
Game FeaturesBuy Hyperbonus, Wild Substitution
Free SpinsYes
Bet Levels1
Graphics 8 / 10
Sound Effects 6 / 10
Entertainment 8 / 10

Playing casino games on mobile

The majority casino games on Spin Castle are flash games which run on most computers and some tablets except for iPads and iPhones. We are also adding HTML5 casino games which can run on any device, including iPads and iPhones the newest games e.g. from Net Entertainment might be HTML5.

Nevertheless, the good news is that all our casinos support mobiles including iOS and Android devices. Therefore, if you choose to play for real cash, you can play on your mobile device once you are directed to their website.

You can do that by going to our Recommended Casinos page or by just clicking on any link on the right hand side. This will open the selected casino and then click on the Mobile link (usually at the top menu of the casino page). When you land on the casino website, most likely, you will already be on the page specially designed for your mobile device.

Make sure you check out also the casino loyalty programs to make a good decision while choosing the right online casino for you. If you are not interested in playing for money, that is fine. All casino games on Spin Castle are offered for free, with no registration, no deposit, no catch.

Enjoy the game.

Game Slot Reviews Free Spins

Alice Cooper

Alice Cooper Slot

Spincastle is proud to introduce the great Alice Cooper slot from Leander Games which you can play with no limits


Spartacus Legendary Warrior

Spartacus Legendary Warrior

Spartacus Legendary Warrior video slot, a design by WMS Gaming, is known to offer amazing features in a uniquely designed slot machine


Take 5 Million Fruit Machine Game

Take 5 Million Fruit Machine Game

Try Take 5 Million online slot just for fun or learn the game here at Spin Castle





Subscribe to our mailing list