Experiment X by Uppercut Gaming turns a laboratory super-soldier experiment into a five-reel, four-row slot. Its 14 paylines give the base game a clear structure, while Bonus symbols lead to a feature where sticky Wilds extend play alongside a rising multiplier.
Quick take: Sticky Wilds keep the three-spin bonus alive as Experiment X’s multiplier climbs.
Theme and Gameplay
The laboratory setting frames a compact 5×4 grid. On ordinary spins, look for three or more matching symbols on adjacent reels from the left, connected along one of the 14 paylines. Wilds can stand in for regular symbols, helping complete a line; Bonus symbols have a separate job. Three start the regular bonus, while four open the Super Bonus, so their count matters as the reels stop.
Slot Features
Three Bonus symbols award three free spins. During the feature, each Wild that lands sticks and resets the counter to three. The global multiplier rises by 1x each feature spin, so an extension gives it more time to build as well as another opportunity to form winning lines.
Four Bonus symbols start the Super Bonus under the same rules, but its multiplier begins at 10x. That higher starting point changes the value of qualifying wins from the outset. A bonus-buy option also offers direct entry to a feature round.
Feature focus: Watch where a new Wild lands during the bonus. It restores the counter to three, but its position also matters: a held substitute on a useful payline can help complete combinations on the spins that follow.
RTP and Win Potential
Experiment X is listed as high volatility, with a 10,000x maximum win. That profile suits an appetite for uneven returns. The rising bonus multiplier gives the feature room to develop, but it still needs paying combinations; the advertised ceiling is a maximum rather than an expected result.
My Thoughts On This Slot
The bonus has a satisfying loop: a Wild holds a useful position and buys more time, while each additional spin raises the multiplier. Those effects give an extension two clear purposes. The four-symbol Super Bonus makes its higher starting multiplier easy to understand while keeping the same central mechanic.
The 14-payline base game is more conventional, and anyone wanting a result settled quickly may find the resetting bonus less appealing. Experiment X is a better fit for someone who enjoys following a feature as held symbols accumulate and later spins gain potential. The laboratory setting supplies the premise; the sticky-Wild cycle gives the game its identity.
Final Take: A readable sticky-Wild bonus gives Experiment X its steadily building hook.