How to play
Sevens Trio looks like an ordinary three-reel fruit machine until you notice the sevens come in three colours. Purple is the most common, gold rarer, and red the rarest of all, with a single red seven on each reel. Matching colours pay their own prizes, and any three sevens in mixed colours still pay a solid 50×.
Set your bet to 1, 2, 5, 10 or 20 credits and hit Spin. The left reel stops first, then the middle, then the right. Only the middle row counts, and the best combination on it is paid as a multiple of your bet. The full pay table is a tap away on screen. You begin with 1,000 credits.
The three sevens
Each reel is a strip of 35 stops, and the sevens are spread like this on every reel: one red, two gold, three purple. That makes six sevens out of 35 stops, so roughly one spin in 200 shows a seven on all three reels in some mix of colours. Which mix you get decides the prize:
| Sevens on the line | Pays × bet | Chance |
|---|---|---|
| Red, red, red | 1,000 | 1 in 42,875 |
| Gold, gold, gold | 300 | 1 in 5,359 |
| Purple, purple, purple | 150 | 1 in 1,588 |
| Any other mix of sevens | 50 | 1 in 238 |
That last row is the one that actually turns up. A mixed-sevens line arrives six or seven times as often as three purples and pays a third as much, and over time it supplies around a fifth of everything the machine returns. Three reds is the dream at 1,000×, but at one chance in 42,875 it’s worth only about 2% of the return.
The rest of the pay table
| Combination | Pays × bet | Chance |
|---|---|---|
| Three triple bars | 60 | 1 in 1,588 |
| Three double bars | 30 | 1 in 670 |
| Three cherries | 20 | 1 in 893 |
| Three single bars | 15 | 1 in 343 |
| Mixed bars | 5 | 1 in 28 |
| Two cherries, reels 1 and 2 | 5 | 1 in 84 |
| A cherry on reel 1 | 2 | 1 in 9.9 |
Cherries count only from the left reel. Below the sevens, the prizes are the same ones the plain Classic Slots machine pays, but on longer reels with fewer bars and cherries per stop, so each of them comes up less often here.
Return and rhythm
With 35 stops per reel there are 42,875 possible results, few enough to count every one. That count puts the return at 97.08%, clearly above the 94.27% of the classic machine.
The price of that return is patience. Sevens Trio pays on about one spin in 6.3, compared with about one in 4.5 on the classic reels. More of the money sits in the sevens, so the gaps between wins are longer and the wins, when they come, are often bigger. The lone cherry, the bread-and-butter win, shows up roughly every tenth spin and accounts for another fifth of the return.
Strategy
Your only lever is the bet. Every size pays the same 97.08% in the long run, so the choice is really about how much variety you want from 1,000 credits.
Because this machine leans on rare sevens, a small bet makes more sense if you want a long session: at 1 credit you can sit through hundreds of spins, which gives the mixed sevens time to land several times. At 20 credits a spin, a dry patch of thirty or forty spins is common and costs a big share of the bank.
Higher return doesn’t mean a winning edge. Ninety-seven per cent is still under a hundred, so the balance drifts down over enough spins whatever bet you choose. Spins don’t remember each other, so there’s no reason to change bets after a near miss with two reds.
If you want a wild symbol instead of coloured sevens, try Diamond Line.
If you enjoy Sevens Trio, try Sevens Wild or Shifting Ways next.
