Just For The Win went deep space for this one. Stellarcade Power Combo is a cosmic slot where glowing coins float across the reels and a Black Hole sweeps them all up when it lands. The more coins on the grid when the Black Hole hits, the bigger the payout.
It follows on from Stellar Jewels Power Combo, which launched in December 2024. The core idea is the same, but Stellarcade Power Combo adds a more powerful free spins system with four upgrade levels and a grid that can grow from 6x4 all the way up to 6x8. That means going from 4,096 ways to win in the base game to 262,144 ways in the bonus at max level. That is not a typo.
Stellarcade Power Combo at a Glance
| Feature | Detail |
|---|---|
| Provider | Just For The Win / Games Global |
| Release | June 2026 |
| Grid | 6x4 base, expands up to 6x8 in free spins |
| Ways to Win | 4,096 base, up to 262,144 in bonus |
| RTP | 96.00% (top setting) |
| Volatility | High (at 96% and 90%) / Medium (at 94% and 92%) |
| Hit Frequency | ~31% (roughly 1 in 3 spins) |
| Min Bet | $0.20 |
| Max Bet | $40 |
| Max Win | 6,250x |
How Stellarcade Power Combo Works
Stellarcade Power Combo plays on a 6x4 grid with scatter pays, meaning symbols just need to appear on adjacent reels from left to right. No fixed paylines. The base game starts with 4,096 ways to win.
The symbol set is retro-arcade space themed: gold bars, bells, 7s, coin stacks, horseshoes, and card royals. The wild fills in for any standard symbol.
The two things to watch for on every spin are Money Symbols and Diamond Symbols. Money Symbols land on reel 6. Diamond Symbols land on reels 2 to 5. Both matter a lot.
The Black Hole Collect
The Black Hole is the collect symbol. When it lands on reel 6 in the same spin as Money Symbols, it sweeps up every Money Symbol on the grid and combines their values into one payout.
Each Money Symbol carries a random cash value of 0.5x to 10x your bet, or one of four jackpot prizes:
- Mini: 15x
- Minor: 40x
- Major: 200x
- Mega: 5,000x
Land the Black Hole with several Money Symbols on the same spin and you collect everything at once. Land it alongside a Mega jackpot symbol and that is the single biggest base game outcome available in Stellarcade Power Combo.
Diamond Symbols and Feature Levels
Three token symbols sit above the reels, each representing a different free spins mode. These tokens have four levels of progression, starting at level 1.
Landing a Diamond Symbol on reels 2 to 5 upgrades the active token's progression level. The higher the level when free spins trigger, the more powerful the feature becomes. Building progression through Diamonds is the main goal during base game play.
When one or more tokens land, there is a chance to trigger 10 free spins. Triggering another feature while inside free spins adds 3 more spins.
The Three Free Spins Modes
Giant Reels
The grid expands based on progression level. More rows means a dramatically larger number of ways to win:
- Level 1: 6x5 grid, 15,625 ways
- Level 2: 6x6 grid, 46,656 ways
- Level 3: 6x7 grid, 117,649 ways
- Level 4: 6x8 grid, 262,144 ways
At level 4, the grid is 64 times bigger than the base game in terms of winning combinations. All 10 free spins run on that expanded grid.
Stack Collect
The collect symbol becomes a stacked symbol during free spins. The higher the level, the taller the stack:
- Level 1: 2-high stack
- Level 2: 3-high stack
- Level 3: 4-high stack
- Level 4: 5-high stack
A 5-high Collect stack covering an entire reel means everything on the grid gets swept in one go. More stack height means more efficient collecting on every spin.
Golden Reels
One or more reels in the middle of the grid are converted to full Money Symbol reels on every spin. The number of golden reels scales with level:
- Level 1: 1 Golden Reel per spin
- Level 2: 2 Golden Reels
- Level 3: 3 Golden Reels
- Level 4: 4 Golden Reels
At level 4, reels 2, 3, 4, and 5 are all packed with Money Symbols on every spin. When the Black Hole lands on reel 6 in that state, it collects from an almost completely loaded board. That is where Stellarcade Power Combo reaches its top end.
Stellarcade Power Combo RTP and Volatility
One thing worth flagging: the volatility actually changes between RTP settings, which is unusual. At 96%, it is High. At 94% and 92%, it drops to Medium. At 90%, it goes back to High. Always check the in-game paytable at your casino to know which version you are playing.
The hit frequency stays consistent across all settings at roughly 31%, or one winning spin in every three. Most of those are small. The big wins live in the free spins, especially at higher levels.
Stellarcade Power Combo Max Win
The max win is 6,250x. At $1 per spin that is $6,250. At $40 max bet it is $250,000.
Getting there requires level 4 Giant Reels or Golden Reels free spins with the board loaded with high-value Money Symbols and the Black Hole collecting a Mega jackpot prize alongside them. It is the absolute ceiling and needs everything to align, but the mechanics are set up to push you toward it.
For context, the predecessor Stellar Jewels Power Combo topped out at 5,000x. Stellarcade Power Combo raises the bar noticeably.
Our Verdict
Stellarcade Power Combo rewards players who play with a plan. Building Diamond progression before the free spins trigger is genuinely satisfying because every Diamond that lands is a visible step toward a better bonus. Arriving at level 4 Giant Reels or Golden Reels feels earned rather than random.
The three free spins modes offer real differences at high levels. Giant Reels at level 4 is a genuinely different game from the base. Golden Reels at level 4 fills the board with money on every spin. Stack Collect at level 4 means one massive sweep.
If you liked Stellar Jewels Power Combo, Stellarcade Power Combo is a clear upgrade. If you are new to the Just For The Win Power Combo format, the 31% hit rate keeps sessions active while you build toward the bonus, and the cosmic theme is visually striking. Worth a spin.