Ternion is an online slot that was developed and released by Play’n GO in June 2023. The game follows Ternion, a team of superheroes, as they attempt to deactivate the Doomsday Device that threatens to destroy Victory City.
The Ternion slot reels are set against Victory City as numerous alien machines and monsters wreak havoc. The game’s symbols include the Ternion logo, the three superheroes (Marvelosa, The Incredible Wonder, and Windstorm), the Doomsday Device, and stylised playing card icons.
Ternion Slot Basics
The Ternion slot uses a 5×4 grid layout with 40 paylines, and the game has an RTP of 94.2% with high volatility, which means you’re more likely to make large, infrequent wins. The game requires a bet of between £0.40 and £100 per spin, and it offers you a chance to win up to 5,000x your bet. To make these wins, you’ll need to match three or more identical symbols on a single spin and payline.

The highest-paying symbols in the Ternion slot are the wild icon and the male superhero, which both pay £100 for landing three times each, £400 times for landing four times and £5,500 for landing five times. After this, the green superhero pays £1,500, the blue superhero pays £1,000, the Doomsday Device pays £200, the A and K icons pay £120 each, and the Q, J, and 10 icons pay £100 each.
Special Features
The Ternion slot comes with numerous special features. There is a wild icon, which substitutes for all symbols except the bonus scatter symbol to help you make more winning combinations. On regular spins, one of three superpowers can be randomly triggered on any spin. Ice shards add up to 10 wild icons to the grid, blade furry removes all royal symbols, and pillars of flame add up to three wild reels to the grid.
On regular spins where no superpower is triggered, there’s a random chance to trigger the call for heroes feature, which guarantees two bonus scatter symbols on the first two reels. Meanwhile, landing three or more bonus scatter icons triggers the free spins mode. Three scatter icons award eight free spins, four award 10 spins, and five awards 12 spins. The free spins mode can be re-triggered for a maximum of 35 free spins.
During the doomsday free spins mode, crystal symbols are collected and stored in a charger. Every five crystals fill up the charger, and one, two or three superpowers are triggered, during which they are more powerful than in the base game. The charger can be filled multiple times during a free spin session.
Games Similar To Ternion Slot
There are several games similar to the Ternion slot, all of which are based on heroes. One game is 4 Squad by Red Tiger Gaming, which uses a 7×6 grid layout with a cluster pays system and an RTP of 95.27%. Icons in the slot include playing card icons, as well as the four superheroes and the golden fish. Feature-wise, you can enjoy wild icons, fillable meters, removable symbols, multipliers, and more.
Another game similar to the Ternion slot is 108 Heroes by Microgaming, now Games Global. The slot uses a 5×3 grid layout with 15 paylines, and it has an RTP of 96.56%. Icons available here include several warriors, wild icons, scatter symbols, and more. For features, the game has wild icons, a free spins mode, and a bonus game.
Ternion Slot Summary
The Ternion slot is a great casino game from Play’n GO, and although the slot doesn’t use a unique theme, it’s still incredibly fun and entertaining to play. There are some exciting special features to enjoy, along with gorgeous visuals too.
We believe the Ternion slot is best suited for experienced players and high-rollers, while new and casual players are better off waiting for something a little easier and simplistic to play – the games we’ve mentioned above may be good first choices!