Wonder Farm Bonus Buy Slot Review
by EvoplayReleased Apr 11, 2023
Free demo - play instantly in your browser
Wild Dorothy nudges to fill the entire first reel and transforms the cheapest card symbols into high-paying animals. Hold & Win bonus with Pie cash values and a 3,000x Super Pie.

Specifications
| Game Type | Slots |
|---|---|
| RTP | 95.95% |
| Volatility | Medium-High |
| Max Win | 3,442x |
| Grid | 5x4 |
| Paylines | 20 fixed paylines |
| Min Bet | $0.1 |
| Max Bet | $75 |
| Hit Freq | 27% |
Wonder Farm Bonus Buy Slot Overview
A cartoon farm with a tornado problem. That tornado is the Bonus symbol, and eight of them open a hold-and-win round where each one turns into a pie with cash baked into it. This edition sells you the shortcut: a Bonus Buy plaque hangs on the fence beside the reels and hands over the round for 36x the bet.
The base game has its own trick. Dorothy is a four-row wild who only turns up on reel one, and when she covers it she rewrites the rest of the grid, converting whichever cheap symbol is most common into an animal. Twenty fixed lines across 5x4, 95.95% RTP, 3,442x at the top. Nothing about those numbers is exciting. What keeps it moving is a 27% hit rate, which is high enough that the reels rarely go quiet for long.
The original Wonder Farm runs identical math without the buy button, so the choice between them comes down to patience.
Theme & Design
The reels sit inside a red barn frame with two caged lanterns swinging from the crossbeam and a grey tabby sprawled on the roof above, watching nothing in particular. Behind it: a windmill, a water tower, sheep wandering yellow wheat fields, cornstalks pushing up along the bottom edge. The bet controls sit on a wooden deck below the barn instead of a bar bolted to the bottom of the display, which is a small thing done well.
The animals carry more personality than the theme asks for. The pig is smug, the cow has a bell and a mouthful of wheat, the rooster is mostly teal tail feathers, and the goat glares out from under a shaggy blue-white fringe like it has plans. Dorothy comes in a straw hat, plaid crop top and jeans. The tornado has googly eyes and stubby little arms, which sells the mood far better than a menacing funnel cloud would. One gripe: the reel panel is flat dark purple and drains the sunny palette that surrounds it, and the carved-wood royals fill a lot of that space.
Symbols & Paytable
| Symbol | Payout |
|---|---|
| Wild Dorothy | substitutes for everything except Bonusreel 1 only, nudges to cover all four rows |
| Pig | 4x / 12x / 120x for 3/4/5top animal |
| Cow | 2x / 7.5x / 50x for 3/4/5 |
| Dog | 1.5x / 5x / 35x for 3/4/5 |
| Chicken | 1x / 4x / 20x for 3/4/5 |
| Goat | 0.7x / 5x / 10x for 3/4/5flat top end for an animal symbol |
| A | 0.5x / 3x / 8x for 3/4/5 |
| K | 0.5x / 2x / 7x for 3/4/5 |
| Q | 0.3x / 1x / 6x for 3/4/5 |
| J / 10 | 0.2x / 1x / 5x for 3/4/5 |
| Bonus (tornado) | 8 or more trigger the Bonus Gamelands on all five reels, pays nothing on lines |
| Pie | 1x, 2x, 3x, 4x, 5x, 8x, 10x, 15x, 20x, 50x or 100x betonly exists inside the Bonus Game |
Features & How They Work
Wild Dorothy
Dorothy is four rows tall and restricted to reel one. She never lands partially: if only a slice of her comes in, the reel nudges up or down until she fills all four positions. From there she substitutes for every symbol except the Bonus tornado, which on a left-to-right, 20-line game means she is feeding all twenty lines at once.
Crazy Farm
Covering reel one does more than pay. The game counts the cheap card symbols scattered across reels two through five, picks whichever appears most often, and turns every copy of it into an animal. Ties go to the cheaper symbol. Wins are worked out after the swap, so a grid of stray 10s and Js resolves into a grid of chickens or pigs, and five-of-a-kind hits that would otherwise be theoretical start turning up.
Bonus Game
Eight or more tornadoes anywhere on the reels start a hold-and-win round. Every triggering tornado becomes a pie holding a random value between 1x and 100x the bet, the rest of the grid empties out, and three respins begin. Only Bonus and Pie symbols appear from that point. Pies lock where they land and stay there.
The payment rule is better than the genre standard. Each time a fresh tornado arrives, the respin counter resets to three and the round pays the sum of every pie currently on the grid, not just the new one. That total gets paid again on the next arrival, and again after that. If no new tornado lands before the spins run out, the starting pie values are awarded and the round closes. Everything is played at the bet that triggered it.
Super Pie
Fill all twenty grid positions and the round ends with a Super Pie worth 3,000x the bet on top of whatever the pies themselves paid. It is the only route to the game's 3,442x maximum, and going from eight locked positions to twenty is exactly as steep as it sounds.
Buying the bonus
The buy costs 36x the total bet and drops eight tornadoes straight away to open the Bonus Game. Buying nudges the return up slightly, to 96.00% against the 95.95% the game runs at otherwise. It only works from the base game, so it is unavailable mid-round.
Screenshots

How Wonder Farm Bonus Buy Plays
Wins arrive often and most of them are small change. Better than one spin in four returns something, but with 10s paying 0.2x for three of a kind, a fair share of those returns land under the stake. The session shape is a long flat stretch broken by Dorothy appearing on reel one, and that single moment carries the base game almost by itself.
The other thing a player ends up doing is counting tornadoes. They are big, purple and impossible to miss against a muted grid, so a spin sitting on five or six of them is agony in a way most scatter chases are not, since the target is eight and you can see exactly how short you are.
Inside the bonus the tension changes character completely. Three respins is not much rope. Either a tornado lands fast and the whole thing snowballs, or the round dies quietly with two pies worth 4x between them. For my money the buy is where this game makes sense, though at 36x against pies that mostly print single digits, bought rounds will miss more often than they land.
Pros & Cons
Pros
- Crazy Farm gives the base game a second act instead of a flat 20-line grind
- The bonus pays the running total of every pie each time a new tornado lands, not once at the end
- 27% hit frequency keeps sessions ticking over
- 36x is a reasonable price for the buy on this math
Cons
- 95.95% base RTP is below par, and the buy only lifts it to 96.00%
- A 3,442x ceiling is thin for a 2023 buy-feature slot
- No free spins anywhere; everything funnels into the one bonus round
- The Super Pie needs all 20 positions filled, which is a long way from eight
Is Wonder Farm Bonus Buy Worth Playing?
Evoplay built this around one honest idea: a wild that rewrites the grid. Crazy Farm is the reason to spin the base game and it does the job, turning junk symbols into pigs often enough to matter. The bonus is a familiar hold-and-win with one rule that improves on the format, paying the accumulated pie total on every fresh tornado rather than settling up once at the end.
What holds it back is the ceiling. A 3,442x top on a game selling its bonus at 36x is modest, and the base return sits under where 2023 releases generally landed. The 3,000x Super Pie is the only outcome here that would make a session memorable, and it demands a perfect grid. Pleasant to play, cheerful to look at, and unlikely to give you a story to tell afterwards.
Frequently Asked Questions
What is the max win in Wonder Farm Bonus Buy?
How do you trigger the Bonus Game?
How much does the bonus buy cost?
Are there free spins in Wonder Farm Bonus Buy?
What is the difference between this and the standard Wonder Farm?
Can under-18s play the demo?

Reviewed by Arina, PR & Content Manager
PR & Content Manager at SlotsReach
Published 4 Aug 2026 · Updated 4 Aug 2026