Under Construction Slots

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Under Construction Casino Games

The world keeps growing in terms of population, and it’s up to builders to erect enough structures to accommodate people in their professional and private lives.

That’s the theme of Under Construction, a 25-payline slot machine from the developers at Booming Games. In addition to the symbols with power tools and safety gear, the game offers free spins with an expanding symbol, and a potentially lucrative gamble option.

The player has the option of activating from one to 25 paylines, and the available denominations per line include the following: 0.03, 0.05, 0.10, 0.20, 0.50, 0.75, 1.00, 1.50, 2.00, and 3.00. The lowest possible bet is 0.03 for a single payline, while the largest is 75.00.


Booming Games only make their titles available to Internet casinos, so you’ll need to get online if you want to sample their wares. They mainly cater to gamblers in Europe and South America, so it’s best to start with sites that accept players from these continents.

Pay Table for Under Construction

Before you do anything else, I suggest taking a long look at the pay table for the Under Construction slot machine. Not only will this familiarize you with the various symbols and their values, but it’ll also provide critical information about payline configurations and bonus features.

The pay tables from Booming Games are always dynamic, which means they change in accordance with the player’s wager. In the examples below, I wagered 0.20 on each of the game’s 25 lines, resulting in a total bet of 5.00.

  • Saw and Hammer – These tools are an integral part of any construction site, and they pay 1.00 for three matches, 2.00 for four, and 4.00 for five.
  • Boots – If you’re going to be walking around the rugged (and frequently dangerous) grounds of a construction site, it’s smart to keep your feet as protected as possible. Pays 1.40 for three matches, 2.40 for four, and 5.00 for five.
  • Power Drill – When you need something drilled in a hurry, the power version of this tool is far more effective. Pays 2.00 for three matches, 4.00 for four, and 10.00 for five.
  • Jackhammer – Used for busting up concrete, this piece of construction equipment pays 5.00 for three matches, 10.00 for four, and 20.00 for five.
  • Power Saw – This type of saw is useful for cutting things in a hurry. Pays 25.00 for three matches, 50.00 for four, and 75.00 for five. This is the game’s scatter symbol, so getting three or more triggers the free spin round. Also, winning combinations don’t have to occur in a specific pattern like other symbols.
  • Hardhat – In order to protect your head at a construction site, wear one of these items made from durable plastic. Pays 8.00 for three matches, 50.00 for four, and 800.00 for five.
  • Warning Lights and Safety Barrels – If you want to caution people about a particularly dangerous area, be sure to put out some safety barrels and a warning light. This icon pays 10.00 for three matches, 200.00 for four, and 5000.00 for five. This is the game’s wild symbol, so it substitutes for all other icons except the scatter.

Gamble Option

When a winning payline turns up on the reels, you’ll have an opportunity to double your money by clicking on the Gamble button located on the lower right of the screen. You’ll be asked to predict whether a hardhat or boot is going spill out of a cement mixer, and guessing correctly leads to your current winnings being doubled.

If you’re fortunate enough to guess correctly, you can collect your winnings or give it another try. The gamble option can be selected up to 10 consecutive times, or until the player’s current winnings have risen to 10,000.00.

I prefer to stay away from this option, but I’ve always been conservative when it comes to gambling. For those with a more adventurous spirit than my own, it’s serves as a great way to inject some additional excitement into the gaming experience.

Free Spins and Expanding Symbol

When three or more scatter icons appear on the reels, the player receives 10 free spins and activates the bonus round. Before it starts, though, the player must also choose an icon at random to serve as the expanding symbol (the wild and scatter are not eligible).

After each complimentary spin, the regular winnings are counted. Then, if three or more expanding symbols are present on at least three different reels, these icons expand vertically and offer additional payouts.


The two highest base payouts on the Under Construction slot are worth 75,000.00 and 12,000.00, so it definitely offers some solid opportunities for increasing your bankroll. The game is a little light when it comes to bonus features, but the expanding symbol does help on this front. Overall, it’s a reliable slot that isn’t going to change the face of online gambling.

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