Budova by 9×16 gives a five-reel, four-row line game a construction theme, with Steel Beams and Rush Hour among its feature options. Fourteen fixed paylines handle ordinary wins. The larger change comes in Free Spins, where expanding Wild columns build a multiplier that carries through the round.
Quick take: Base-game Wilds help individual lines; Free Spins collect their multiplier values into one total that keeps growing across the feature.
Theme and Gameplay
Press Spin and read matching symbols from the left across the 14 active lines. Wilds substitute for regular symbols and can carry random multipliers. If several multiplier Wilds sit on the same winning line in the ordinary game, their values add together.
That makes the line the important unit to watch at first: two Wilds in different places only combine their multipliers when the same paying line uses them. Free Spins switch the emphasis from an individual line to the total shown above the reels.
Slot Features
Three, four or five Scatters award eight, twelve or fifteen Free Spins. During the feature, Wilds expand upward from the position where they land. Each new expanding Wild column with a multiplier above 1x adds its value to a global multiplier, which begins at 1x. A 1x Wild adds nothing.
The global total carries into the following Free Spins and applies to the whole win of each spin, including the spin that increased it. It does not work like the ordinary per-line Wild calculation. Landing three, four or five Scatters during the feature adds five, eight or ten spins.
Rush Hour is an ante option that increases the chance of reaching Free Spins. Steel Beams offers a different base-game approach, with two guaranteed upward-expanding Wild columns, but Free Spins cannot trigger while that booster is active. Direct Free Spin purchases provide another entry route.
Feature focus: During Free Spins, follow the global total above the reels. A new multiplier Wild column can raise it for the current spin and every following spin in that feature.
RTP and Win Potential
Keep the two calculations separate. In ordinary play, qualifying Wild values add on the winning line that uses them. In Free Spins, newly collected multiplier values join a persistent total applied to the spin as a whole. A higher total still needs a win to multiply, so its size does not make every spin a paying one.
My Thoughts On This Slot
Moving the multiplier from a line calculation into a feature-wide total gives Budova a clear change of pace. The upward expansion is useful to follow on the board, while the displayed global value tells you what earlier Wild columns have contributed. Retriggers give that accumulated total more spins in which to matter.
The distinction also asks for attention. Reading every multiplier as though it were attached to one line would miss how the Free Spins work. The booster that rules out a natural Free Spin trigger is another choice to understand before selecting it. This suits someone who enjoys different feature formats within a familiar line layout.
Final Take: Upward-expanding Wilds and a persistent Free Spin multiplier give Budova two different ways to read its line wins.