Wild Booster Demo & review

Wild Booster puts its whole bonus on one ladder: every wild in free spins carries a multiplier, and every five scatters you collect pushes that multiplier up a step. Pragmatic Play released the 20-line fruit slot in April 2021. Before the round starts you choose the ladder, a slow climb to x100 or a quicker one that stops at x50. It is built for players who enjoy a bonus they can see building.

The intro shows the Wild Boost meter beside the reels, the 5,000x cap and the volatility label. FluxPlays demo test, 3 November 2026.

How Wild Booster works

Wild Booster is a 5x3 slot with 20 fixed lines, read left to right. The symbols are a classic set: the 7 on top, four fruits and four card-suit gems. Five 7s on a line pay $30.00 at a $1 bet and five lemons $15.00, while five gems of the lowest kind pay $2.50.

The wild appears on all reels and substitutes for every symbol but the diamond scatter. Every feature in the game runs through that wild:

1. In the base game, any spin with a wild can roll the Wild Boost, a random multiplier from x2 to x100 on wins that include a wild.
2. Three or more scatters anywhere start Super Boost Free Spins, and you pick Mega Boost or Ultra Boost.
3. In free spins every wild win carries the current multiplier, and five collected scatters move it up a level with five more spins.

Lines without a wild are paid as they land, with no multiplier at all.

The Wild Boost in the base game

On any base spin where at least one wild lands, the game may trigger the Wild Boost. It picks one value from x2, x3, x4, x5, x6, x8, x10, x12, x15, x25, x50 or x100, and the multiplier applies to every winning line that contains a wild. A line of fruit next to it is paid at face value.

That makes the meter on the left of the reels the thing to watch. A wild that completes a line of five 7s with a x25 boost on it would turn that line into $750.00, which is why the boost, not the paytable, decides how a base session goes. Wins without a wild stay small, because the paytable itself is modest.

The boost covers every winning line with a wild on that spin, not just one. A single wild can sit on several of the 20 lines at once, so a spin where it completes two or three lines multiplies all of them by the same value. That is why one wild in the middle of the reels can matter more than a full line of lemons.

Wild Booster free spins: Mega Boost or Ultra Boost

Three or more diamond scatters anywhere start Super Boost Free Spins. Both options open with five spins, and both use the same climbing rule: five collected scatters raise the wild multiplier one level and add five spins. The scatters that started the round already count toward the first level. A round triggered by four scatters therefore needs only one more for its first step, and one triggered by five has its first five already collected. The same applies to the buy, which lands three to five at random.

The choice after our natural trigger on spin 15: two ladders, one higher and one quicker. FluxPlays demo test, 3 November 2026.

The trade sits at the top. Mega Boost starts lower and climbs more slowly, but its last step is x100. Ultra Boost starts higher and moves faster, but tops out at x50, and its third level is x12 where Mega's is x10. Reaching the top of either ladder takes three level-ups, fifteen collected scatters counting the ones that triggered the round, and that would make the round 20 spins long.

Mega Boost at x2: the trail across the top fills with each scatter, and a wild line pays double. FluxPlays demo test, 3 November 2026.

The trail across the top of the reels shows where you are. Each scatter that lands moves the marker one arrow along, and the label at the end of each group of five is the next multiplier.

Two level-ups in, the round sits at x10 with two spins to go and $24.50 won. FluxPlays demo test, 3 November 2026.

Buying the free spins

The Buy Free Spins button costs 75 times the bet. It lands three to five scatters at random, and you still choose between Mega Boost and Ultra Boost afterwards. The rules give the buy the same 96.47% return as the base game, so paying changes the route to the bonus, not the expected return.

Wild Booster RTP, volatility and max win

The return to player is 96.47%, with or without the buy. Pragmatic Play labels the game High volatility, on the intro and in the rules. The top win is 5,000x the bet, whether it comes in the base game or in free spins. The smallest bet is $0.20 and the largest $240.00.

Our Wild Booster demo test

The session turned on spin 15, when three scatters started the free spins and we took Mega Boost. The first stretch at x2 was slow, $7.25 after six spins. Scatters kept arriving, though, and the round climbed to x5 and then x10, each step adding five spins, for 15 in all. On free spin 14 a wild line worth $5.00 took the x10 and paid $50.00, two thirds of the round's $74.50.

The Mega Boost round ended at x10 with $74.50 won over 15 spins. FluxPlays demo test, 3 November 2026.

Outside that round, the base game returned its money in small pieces, and the best plain spin paid $3.95 on spin 26. The bought round went the other way. We chose Ultra Boost, never collected enough scatters to leave x3 and finished after five spins.

One natural round and one buy say very little about how either ladder pays over time. What they do show is the mechanism: the multiplier only matters once scatters move it, and our two rounds split on that point. The Mega round kept finding scatters and climbed twice. The Ultra round, on the ladder that is meant to climb more easily, did not find enough in five spins and ended where it began. Neither ladder reached its top step for us, and no base spin brought a large Wild Boost.

The bought Ultra Boost round never left x3: last spin, $15.00 won so far. FluxPlays demo test, 3 November 2026.

Is Wild Booster worth playing?

Yes, if you like a free spins round that builds in front of you. The scatter trail turns every spin of the bonus into progress you can see, and the choice of ladder is a real one. What holds it back is the base game: wins without a wild are small, so between bonuses the Wild Boost carries everything.

By the rules, Mega Boost is the pick for the highest ceiling and Ultra Boost for a round that levels up more readily. If your bonus usually dies early, Ultra's x3 start and easier climb are the safer frame. If you play for the rare monster round, only Mega reaches x100.

Champions of Rome, another slot built around a free spins choice, asks something harsher: keep what eight spins win, or gamble the whole round on a coin target and a multiplier. Wild Booster's choice risks less, since neither ladder can take back what you have already won. The decision here is about shape, not survival. Mega Boost asks you to accept more rounds that end early at x2 or x5 in return for a top step twice as high as Ultra's. Ultra Boost gives up that last step for a better chance of reaching the middle of its ladder, where x6 and x12 do most of the work.

In the demo, play a few bonuses on each ladder and watch the trail rather than the win meter. How often the trail reaches its second label is the habit worth learning before you think about the buy.