Cosmic Heart

Rate This Free Game
(35 votes)
High 5 Games
265 more slots

Get 100% up to $2000 + 20 free spins

Ready to play Cosmic Heart for real?

Play for Real Money
Cosmic Heart Online Slot

Cosmic Heart Online Slot Review

Take a virtual trip to the center of the cosmos when you play the Cosmic Heart slot online. Colorful asteroids, planets, and galaxies land across the five reels and 20 paylines of this PC and mobile-compatible game.

A Prize Line above the reels awards in-game features such as expanded wilds and multipliers, while a free spins bonus round and pick-me feature can land you with some stellar prizes. The Cosmic Heart slot machine has a high volatility, and you can claim a win of 10,174x your stake when the stars line up in your favor.

Reach for the Stars

Play in landscape mode on a PC, and you see the 5x5 grid of colorful symbols floating in deep space, surrounded by alien planets and asteroids. Portrait mode crops the intergalactic setting and focuses on the symbols of green, purple, and pink glowing rocks, plus blue, orange, and pink planets.

Look above the Cosmic Heart online slot reels, where gold boxes of energy float in the ether. These activate a rich variety of bonuses when the triggering symbols land below them.

It’s an eye-catching example of an online slot machine set in outer space, with quality graphics used throughout. There’s an excellent soundtrack that would suit a sci-fi movie, although the developer, New York-based High 5 Games, include a few subtle slot machine sounds as well. 

Orbit Around the 20 Paylines

You can place stakes between 0.20 and 20.00 on each spin, which equals 0.01 to 1.00 on each of the 20 lines. As usual, you win by matching symbols across a line from the left side, helped out by wilds and bonus icons. 

As the Cosmic Heart slot machine comes with a high volatility, it tends to pay out greater than average prizes, but less often. Over the long term, it returns 96.00 for every 100.00 staked.

If you want to see how much each symbol is worth, check out the paylines table below. It shows you the wins as multiples of the per line bet –

Three on a Payline
Four on a Payline
Five on a Payline
Green, Pink, Purple, Blue Asteroids
Blue, Orange Planets
Pink Planet
Wild Symbol

The wild acts as asteroid and planet symbols to bridge any gaps in combinations, or to extend a win across further reels if possible. Control options include the chance to test the game out and play Cosmic Heart for free before making cash wagers, plus it comes with an Autoplay mode that can run for up to 100 consecutive spins.

Activate the Prize Line

Those boxes above the reels each hold a special feature, awarded if the symbol of galaxies colliding in an X shape appears below. Six different features can appear, and they move across one reel to the left in each spin until moving out of view, as new ones appear from the right of the Cosmic Heart slot machine. In no particular order, you’ll see the following – 

-          Instant credits win of between 2x and 100x the total bet.

-          Stacked wild symbols filling all rows on a reel.

-          Between three and 20 spots filled with wild symbols.

-          Multipliers on the current win, if any, between 2x and 10x.

-          Entry to pick bonus

-          Entry to free games bonus.

The glowing blue star unlocks a prize picking round, with the number of selections revealed on the triggering symbol. You click green gems to find multipliers varying from 1x to 10x the bet, with an additional multiplier rising by 1x if you get to a seventh pick. 

Gems can also reveal dull stars, which reduce your number of picks by one. This round of the Cosmic Heart online slot continues until you run out of lives. 

The free games trigger symbol displays the number of extra rounds awarded. Payouts from the Prize Line multipliers are reduced during the bonus games, but it shouldn’t make too much difference to your overall winning chances. 

Discover a Universe of Similar Games

The Galactic Steak online slot comes from Playtech and features stars, galaxies, and planets over four reels and ten lines. It’s a win both ways game, where a blazing star is the wild symbol, and a spiral galaxy transports you to a free games round. In an Orbit feature, winning positions award multipliers for the following three spins.

Hypernova Megaways is a slot from Reel Play that offers up to 117,649 different ways to win across the six reels. The number of symbols on each reel varies from spin to spin and it comes with a Jackpot Respins bonus round can lead to vast wins of up to 2000x your total stake. 

Will you be Seeing Stars?

The Cosmic Heart online slot is an attractive game with some highly appealing features. The high volatility can lead to pretty long gaps between winning spins, so set your stakes accordingly. Also, you won’t trigger a bonus every time, as you’ll need the colliding galaxies Heart symbol on the reels to benefit from Prize Line features. 

Once the stars line up, you can enjoy multipliers, free games, stacked wilds, and more. Wins are guaranteed from the pick bonus feature and all but certain during the free games round. If you enjoy space-themed slots, gravitate towards our recommended High 5 Games online and mobile casinos today.

Cosmic Heart Slot FAQs

Is there a free version of the Cosmic Heart online slot?

Yes, there is. You can play the Cosmic Heart slot for free right here exploring the strange worlds and multiple bonus rounds with no need to stake any cash.

How do I play the Cosmic Heart slot for real prizes?

Simply follow our guide to the best online and mobile casino sites that carry the Cosmic Heart slot. You can then pay in funds and play for real money.

Is the Cosmic Heart slot compatible with my iPhone?

Cosmic Heart is a slot game compatible with iPhones, iPads, Android, and Windows mobile devices, as well as PCs and laptops. It works in landscape and portrait modes.

Who develops the Cosmic Heart online slot?

The Cosmic Heart slot machine is the work of the High 5 Games casino games developer. You will find it and the rest of their range at our recommended casinos.

Free to Play High 5 Games Slot Machine Games

You Might Also Like

Casino Bonuses

Casino Bonuses

From welcome packages to reload bonuses and more, discover what bonuses you can get at our top online casinos.

Online Gambling

Online Gambling

Ready to learn all about online gambling? Then check out our complete guide, where we also rank the best gambling sites for 2023.

Mobile Slots

Mobile Slots

No matter what device you’re playing from, you can enjoy all your favorite slots on mobile. Find out how to get started.

Live Dealer Casinos

Live Dealer Casinos

Live dealer games are some of the most innovative and immersive offerings at online casinos. Learn about the top live dealer casinos with our expert guide!

Our Favourite Casinos

By subscribing you: consent to receive bonus offers and other emails from VSO; confirm that you are of legal age to gamble in your country of residence; and acknowledge that you have read and accepted our privacy policy. You can unsubscribe at any time. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

You've Won a Free Spin

Claim Bonus

Will You Win?

Choose one of the treasure chests to see if you've won an exclusive bonus.


Treasure Box


Treasure Box


Treasure Box


No thanks

You've Won!

Treasure Box

Enjoy Your Prize!

You've won an exclusive one-time only bonus at:

Get up to 300% Welcome Match + 100% Cashback
Claim Bonus
No thanks

Report a problem with

Let us know what went wrong:

Submit Your Feedback

Thank you for providing feedback! We’re sorry didn’t work.

If you’d like to tell us more about your experience Click here.

While we resolve the issue, check out these similar games you might enjoy.