Interstellar Attack slots from high-5-games

RTP: 97.2%

Blast off in Interstellar Attack! Let the cosmic battles bring you astronomical rewards.

Blast off for cosmic battles and astronomical rewards in Interstellar Attack, a thrilling space-themed casino game from High 5 Games. This 5-reel, 25-payline slot is a high-energy adventure packed with features. With Free Spins, Multipliers, and an RTP that can increase up to a stellar 97.2%, this is a high-volatility battle with a massive max win potential of 28,039x your stake.

Provider: High 5 Games
Release Date: 2021
RTP: 94.0%–97.2%
Volatility: Medium
Max Win: 28,039x
Theme: Space / Sci-Fi
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Feature Value
Reels 5
Rows 3
Paylines 25
Min Bet $0.25
Max Bet $250
Max Win 28,039x
Jackpot No
RTP 94.0%–97.2%
Volatility Medium
Hit Frequency N/A

Interstellar Attack features a vibrant and action-packed retro space shooter theme, reminiscent of classic arcade games. The design is full of energy, with a backdrop of deep space and warring starships. The graphics are colorful and sharp, with symbols depicting different alien spaceships and futuristic weaponry. An electronic, high-energy soundtrack adds to the intensity of the cosmic battle, making this mobile slot a truly explosive experience.

Regular Symbols: The high-paying symbols are the various enemy alien spacecraft. The lower-paying symbols are the standard A, K, Q, and J card royals, designed in a futuristic, digital font.

Special Symbols:

  • Wild Symbol: The Wild symbol substitutes for regular symbols to help you shoot down more winning combinations.
  • Bonus/Scatter Symbol: This symbol is your key to triggering the main Free Spins bonus feature.

Joining the space fleet is easy. Use the simple controls to set your total bet. Once your spaceship is armed and ready, press the “Spin” button to engage the enemy. To understand the unique RTP-boosting feature, you can try the free slot machine version first. The game is fully optimized for a thrilling cosmic battle on any iOS or Android device.

Increasing RTP: A key feature of Interstellar Attack is its variable RTP. Through certain in-game actions or by playing consistently, players can unlock higher RTP levels, increasing the game’s payout percentage from a base of 94.0% up to an excellent 97.2%.

Free Spins with Multipliers: The main bonus is the Free Spins feature, triggered by landing three or more Scatter symbols. This awards a number of free games. During the free spins, a win multiplier is often active. This multiplier can increase with each consecutive win or cascade, leading to the potential for truly astronomical payouts, especially when combined with the game’s massive max win potential.


RTP: Interstellar Attack has a variable RTP that ranges from 94.0% to 97.2%. This unique mechanic rewards players, as progressing in the game can permanently improve its payout potential, making it a very attractive high RTP slot at its peak.

Volatility: With medium volatility, Interstellar Attack offers a balanced experience. Players can expect a good mix of wins, with the excitement building towards the massive potential of the free spins with increasing multipliers.


Interstellar Attack is a stellar slot from High 5 Games that is loaded with potential. The increasing RTP mechanic is a fantastic innovation that gives players a real sense of progression and reward. Combined with a massive max win, powerful multipliers, and a fun, high-energy theme, this is a top-tier game for players looking for a deep and rewarding experience. The cosmic battles can indeed bring astronomical rewards!

Pros Cons
✅ Massive max win of 28,039x ❌ Base RTP of 94.0% is very low
✅ Innovative increasing RTP feature (up to 97.2%) ❌ Progression can take time and investment
✅ Exciting free spins with multipliers
✅ Fun retro space shooter theme

Suitable for: Players who enjoy games with progression mechanics and massive win potential.


What is the RTP of Interstellar Attack?

The RTP of Interstellar Attack is variable, starting at 94.0% and increasing up to 97.2% through gameplay.

Can I play Interstellar Attack for free?

Yes, a demo version is available on our site, allowing you to play for free and see how the RTP increases.

Does it have a free spins feature?

Yes, the game has a powerful free spins feature that often includes an increasing win multiplier.

What is the maximum win?

The maximum win is a massive 28,039 times your total bet.

Is it mobile-friendly?

Absolutely. The game is fully optimized with HTML5 technology for a seamless gaming experience on all mobile devices.


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