Play'n GOPlay'n GO

    Crystal Sun

    7.3/10
    Release April 2019· Updated August 2026

    96.60% RTP, tenth best of the 180 Play'n GO machines in the BetsRank database, on a game with no free spins at all: everything runs through the centre-reel sun wilds.

    RTP
    96.6%
    Volatility
    High
    Max Win
    4 000x
    Grid
    5x3 grid
    Bonus Buy
    No
    Wilds soleil extensiblesRe-spins avec wilds collantsMultiplicateurs de wild x1/x2/x3, cumul jusqu’à x9
    Crystal Sun
    🎰

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    7.3

    BetsRank Verdict

    Hands-on testing by Alexandre Dubois — bonus tested, multiple sessions

    Crystal Sun has no free spins. Not a short version, not a disguised variant: none at all. Across the 180 Play'n GO machines held in the BetsRank database that is a rarity, and it forces the game to hang everything on a single feature — the sun wild that expands, sticks and respins. The mechanic is clean: the sun only lands on reels 2, 3 and 4, covers its whole reel, takes a x1, x2 or x3 multiplier, then freezes and triggers a respin. The chain ends when no new sun appears or when all three centre reels have turned wild. The multiplier ceiling is therefore structurally capped at x9, and that cap is visible on screen, which is more honest than most open-ended growing multipliers. The 96.60% RTP puts the game in the top ten of the Play'n GO catalogue we track, ahead of Reactoonz at 96.51% and Rise of Olympus at 96.50%. Then there is the cap: 4,000x, against a catalogue median of 5,000x, with 135 titles reaching higher. A clean, short game with no depth — and the studio owns it, describing the title itself as "this simple little game".

    Strengths

    • +96.60% RTP, top ten among the 180 Play’n GO titles BetsRank tracks
    • +A bounded, visible multiplier ceiling rather than an open-ended one
    • +All ten paylines are read in both directions
    • +The mechanic is legible after a single spin, with nothing layered on top
    • +€0.10 minimum stake

    To consider

    • No free spins, which is unusual and starts to show over a long session
    • 4,000x cap, below the catalogue median of 5,000x
    • The wild never lands on reels 1 and 5
    • Low paytable: five diamonds return only 16x
    • A 94.5% RTP build circulates at some operators

    About Crystal Sun

    Crystal Sun was released on 24 April 2019. Play'n GO files it under a sci-fi theme and describes it on its own page as "a vibrant and colourful 5-reel slot, this simple little game has lots of unique characteristics that will 'multiply' your fun". That is an honest description: the game is short, and its only feature is a multiplier.

    The grid runs five reels by three rows, with ten paylines read in both directions. That point deserves a moment: paying both ways does not double the number of lines shown, it doubles the number of directions evaluated. A combination starting on reel 5 counts exactly as much as one starting on reel 1.

    The wild is a sun, and it only lands on reels 2, 3 and 4. The outer reels never turn wild, so the maximum reachable is three fully covered reels. When a sun appears it stretches across the full height of its reel and is assigned a win multiplier of x1, x2 or x3. Wins are paid, the wild then stays stuck in place and a respin starts. The sequence repeats for as long as a new sun keeps landing, and stops when none appears or when all three centre reels are wild.

    Only combinations containing a wild get multiplied. When several wilds sit on the same line their multipliers are added together: three x3 wilds give x9, and that is the game's ceiling. One specialist database instead describes a fixed x3 per wild; both readings land on the same x9 maximum, but the detailed version with randomly drawn x1, x2 or x3 values explains better why some respin chains return so little.

    The paytable is modest. The coloured crystals, the low symbols, return 2x to 4x the stake for five of a kind. Triple 7s pay 8x and triple diamonds 16x for five. Take the best possible screen: five diamonds on a line at 16x, multiplied by x9, is 144x per line. Ten lines make 1,440x, and reading in both directions brings the total to 2,880x. Yet specialist databases publish a ceiling of 4,000x. The gap comes from how the chain works: each respin pays separately and the wins add up, so a long sequence can exceed what a single screen returns.

    The default RTP is 96.60%, leaving the house a theoretical €3.40 margin per €100 wagered. That is a strong figure for the studio — only nine of the 180 Play'n GO titles BetsRank tracks do better, and it is the highest of the eleven 2019 releases in our database. SlotCatalog also documents a 94.5% build: which one is installed depends on the operator, not the player.

    Stakes run from €0.10 to €100, and volatility is rated high. The 4,000x cap is worth €400 at €0.10, €4,000 at €1 and €400,000 at €100. That sits below the catalogue median of 5,000x, and 135 Play'n GO machines in our database climb higher. One last detail: SlotCatalog dates the release to 23 April 2019, the studio's own page to the 24th.

    Key mechanics

    • 5x3 grid with 10 paylines paying in both directions
    • Sun wild restricted to reels 2, 3 and 4
    • The sun expands across the full height of its reel
    • Wild multiplier drawn from x1, x2 or x3
    • The wild stays stuck and triggers a respin once wins are paid
    • Multipliers from several wilds add together, capped at x9
    • The chain stops if no sun lands or all three centre reels are wild
    • No free spins at all: the game rests entirely on this one feature
    • 96.60% RTP, leaving €3.40 house margin per €100 wagered
    • Stakes from €0.10 to €100, capped at 4,000x

    Crystal Sun FAQ

    Does Crystal Sun have free spins?

    No, and that is the game's most unusual trait.

    SlotCatalog confirms it explicitly: there is no free spins feature at all. The entire potential runs through the respins triggered by sun wilds on the centre reels.

    What is the RTP of Crystal Sun?

    The default setting is 96.

    60%, leaving the house €3. 40 per €100 wagered. SlotCatalog also documents a 94. 5% build: the operator chooses which one it installs, and the figure appears in the casino's game rules.

    Where can the sun wild appear?

    Only on reels 2, 3 and 4.

    The outer reels never turn wild, which mechanically bounds the feature: three covered reels at most, and therefore three stacked multipliers at most.

    How does the respin work?

    When a sun lands it covers its reel, takes a multiplier, wins are paid, then it stays stuck and a respin begins.

    The chain continues for as long as a new sun keeps landing, and ends when one does not.

    How do you reach the maximum x9 multiplier?

    You need three wilds each carrying a x3 multiplier on the same winning line.

    The values are added, so 3 + 3 + 3 gives x9. Only combinations containing at least one wild are multiplied.

    What does paying both ways mean?

    The ten lines are evaluated left to right and right to left.

    A combination starting on reel 5 pays the same as one starting on reel 1, which doubles the number of directions being checked on every spin.

    What is the maximum win worth in cash?

    Specialist databases put it at 4,000x the stake, so €400 at €0.

    10, €4,000 at €1 and €400,000 at €100. That sits below the 5,000x median of the Play'n GO catalogue BetsRank tracks.

    Why does a full screen calculate to 2,880x rather than 4,000x?

    Five diamonds pay 16x, multiplied by x9 gives 144x per line; ten lines make 1,440x, doubled by both-ways reading for 2,880x.

    The published cap is higher because each respin in the chain pays separately.

    What do the symbols pay?

    The coloured crystals, the low symbols, pay 2x to 4x the stake for five of a kind.

    Triple 7s return 8x and triple diamonds 16x. The table is deliberately low: the multiplier is what does the work.

    How volatile is Crystal Sun?

    Specialist databases rate it high.

    With no free spins to cushion the ride, sessions depend entirely on how often suns land: long stretches of nothing, then one respin chain that decides the whole session.

    Is there a bonus buy?

    No.

    No source mentions a feature buy, which is consistent since there is no bonus to purchase. Respins only trigger naturally, when a sun lands on one of the three centre reels.

    Alexandre Dubois
    Alexandre Dubois

    Online Casino & Bonus Expert

    Last updated: 8/9/2026

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    Slot sheet last updated on · Sources: slotcatalog.com, official provider sites, BetsRank hands-on testing