Hold & Spin · Rules & pays
Prairie Thunder: how it plays
Prairie Thunder is a five-reel, three-row slot with 20 fixed lines and a Hold & Spin feature. Matching symbols pay along the lines from left to right, the Lightning wild stands in for the pictures, and every Thunder orb shows a value. Land 6 or more thunder orbs anywhere and they lock in place for respins. It is a wild game: line pays are modest and Hold & Spin is rarer, but it can return a lot more. You play with Pebbles, which have no value and cannot be bought or exchanged.
Play Prairie ThunderPlaying a round
- Choose your stake with − and +. It covers all 20 lines, so each line gets an equal share.
- Press Spin. Quick makes the reels and respins faster.
- Three, four or five matching symbols on a line, starting from the leftmost reel, pay that line stake times the amount in the table.
- 6 or more thunder orbs anywhere start Hold & Spin: the thunder orbs lock, every other cell spins on its own, and you get 3 respins.
- Each new Thunder orb that lands locks too and sets the respins back to 3. When the respins run out, every value on the board is added up.
- Fill all 15 cells and the Thunder Crown adds ×1,000 the stake on top.
Line pays, as multiples of the line stake
| Symbol | 3 in a row | 4 in a row | 5 in a row |
|---|---|---|---|
 Bison | ×25 | ×150 | ×750 |
 Golden eagle | ×20 | ×100 | ×400 |
 Grey wolf | ×15 | ×50 | ×250 |
 Canyon mesa | ×10 | ×40 | ×150 |
 Star badge | ×4 | ×15 | ×50 |
 Boots | ×3 | ×10 | ×50 |
Thunder orb values, as multiples of the whole stake
| Symbol | Value | Multiple |
|---|---|---|
 Thunder orb | Plain values | ×1, ×2, ×3, ×5, ×8, ×10, ×15 |
| Thunder orb | Spark | ×20 |
| Thunder orb | Bolt | ×50 |
| Thunder orb | Storm | ×150 |
| All 15 cells | Thunder Crown | ×1,000 on top of every value |
Special symbols
| Symbol | What it does |
|---|---|
 Lightning wild | Wild. Lands on reels 2, 3 and 4 only and stands in for every symbol except the Thunder orb. |
| Thunder orb | Carries a value. It does not pay on lines; 6 or more start Hold & Spin. |
Good to know
- 20 fixed lines. Only the longest match on each line pays, and pays on different lines add up.
- Thunder orbs only count in Hold & Spin. Fewer than 6 in a spin return nothing on their own.
- Named thunder orbs are rare: Spark ×20, Bolt ×50, Storm ×150. They are fixed multiples of the stake.
- In Hold & Spin, cells that are not locked only show an empty slot or a new thunder orb.
- Hold & Spin belongs to the spin that started it: the stake is taken once, and line pays plus every value are added at the end.
- Results come from the random generator in your browser. Earlier spins have no effect on the next one.
- Every result is decided by your browser's cryptographic random number generator at the moment you play. Your account, level and earlier rounds make no difference.
- Without an account the game runs in demo mode with practice credits that are not saved. Signed-in players use their Pebbles.
- Pebbles have no cash value and cannot be bought or exchanged. If you run out, you can top up for free.
18+ — for entertainment only. No real money play. No prizes of monetary value.
