Pros
Collect energy spheres

Transform scatters or trade up

Trade up to tier 3 to trigger bonus round

Bonus round w/ expanding wild on 3 middle reels
Cons
Max win is only 250x your stake

Portal Master slot machine is a Mancala Gaming game with 5 reels and up to 1024 paylines. It has a sci-fi style and its theme takes you to a mysterious planet in outer space. Portal Master Slot can teach you how to use energy balls to open portals of different sizes at any time.

How to Play Portal Master Slot

Set your bet and get ready to step into the mysterious universe and uncover all its secrets.

  • The total bet +/- will help you set the bet the way you want.
  • Chip button is the maximum bet, which will expand the bet to the maximum bet allowed.
  • Spin button will make the reels spin.
  • Auto-play game will open a panel where you can select the total bet and the number of automatic spins to be made in that bet.
  • If turned on, Thunder will make the turntable spin faster.
  • Use / Trade Up will use a sphere or replace it with a more powerful sphere on Energy Spheres Collection Rock.

The Portal Master Wild

Portal Master is essentially an expandable Wild symbol that can replace all symbols in the game to help form winning combos, except for Scatter. In the base game, you will see that it only falls on reel 3, but when the symbol hits, it will expand and cover the entire reel, and provide you with an energy ball, which will be added to the left of the reel Sphere Collection Rock.

During free spins, “Wild” can hit the middle rollers-2, 3 and 4, and each spin can appear on multiple rollers. However, instead of giving you an energy ball like in the base, you will get 1 extra spin every time you appear.

Scatter Crystal

Crystals are activation symbols and can be combined with energy balls to create more chances of winning. Each visible scatter point can only use one energy ball to convert it into a regular symbol. Scattered crystals can appear on all 5 reels.

Energy Spheres

Every time the Portal Master hits the wheel, the Sphere will be added to the Collection Rock on the left side of the wheel. You can use the saved sphere to trade off in exchange for a stronger sphere, or you can use it to convert the scattering crystal symbol into a regular symbol. There are 3 types of spheres: low-level, middle-level and high-level spheres.

There are 3 low-level energy balls, when you click “Use”, the random symbols on the grid will change. If all 3 slots on the rock are filled, no low-level spheres will be collected until there are some empty spheres before use or trade. Only by exchanging low-level energy balls can you get 2 middle-level energy balls, and you will need 3 low-level energy balls to get one middle-level energy balls.

The intermediate sphere converts the entire line into the same random symbol. High-level Sphere can only be one on Collection Rock, and can be obtained by trading 2 Intermediate Spheres.

When you redeem the premium sphere, you will get a randomly selected number of free spins.

Slot Features

The game is an all-round slot machine that pays from left to right. The game is played on a 4×5 grid with 2 special symbols-Portal Master and Scatter Crystal.

Free Spins

When you replace 2 intermediate orbs with advanced orbs, the round will be triggered. This will randomly grant a random number of free spins before the feature starts, and you can get 10, 15, 20 or 25 spins.4

Summary Portal Master Slot

Portal Master Slot is a interesting slot. It provides excellent graphics and works of art, which is one of the very unusual themes that we don’t have the chance to encounter often.

Most importantly, these features are innovative and really fascinating, especially the “energy balls” part, although the waiting to actually collect these balls can be a bit tiring, because they don’t seem to appear often.

The RTP is set to 95% below average, but this will not prevent you from testing the RTP.

Where to play Portal Master Slot

SoftwareMancala Gaming
Slot TypeVideo Slots
RTP95%
Special FeaturesWild, Scatter, Free Spins

Slot Details

  • Software: Mancala Gaming
  • Slot Type: Video slots
  • Paylines: 1024
  • Reels: 5
  • Min Coins Size: 10
  • Max Coins Size: 900
  • Jackpot: 2500
  • RTP: 96.47%
  • Bonus Game: No
  • Progressive: No
  • Wild Symbol: Yes
  • Scatter Symbol: Yes
  • Autoplay Option: Yes
  • Multiplier: No
  • Free Spins : Yes

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