Oil Mania is a niche themed online slots game powered by NextGen Gaming software developer. There are five reels, three rows, twenty-five paylines, wilds, bonus and gamble features in it. Users can set the number of paylines (from 1 to 25), and bet per one (from €0.02 to €2), so the minimal stake per spin is €0.02 and the maximal one is €50. An Autoplay option allows gamblers to automate the gameplay by setting from five to one hundred automatic spins. The RTP coefficient of the slot is approximately 95.
This online slot machine will take you into the XIXth century – the time when wildcatters were trying to find petroleum in the western areas of the American continent. Rigs and steam engines in the field are depicted in the game’s background. On the five reels, you’ll see a gold car, a petroleum worker (the most paying symbol), a stock market graph, a suitcase full of money and traditional poker suit icons ranging from nine to Ace. The playing process is accompanied with folk music of Wild West, bird songs and sounds of different mechanisms which are used in petroleum exploration,
Tycoon symbol only occurs on reels four, three and two and launches the Upwild feature. It consists of three free spins (the other game with free spins is the 40 paylines in Black Widow free online slot that could be played with no download or registration needed with bonus games and rounds. in which an animated Oil Well symbol appears on the lower row. Oil Well grows upward by one position with every free spin three times then disappears; it acts as a wild and may substitute for all other symbols. The Upwild feature may be retriggered if the additional Tycoon appears. Wins achieved in free play mode are added to the main winnings.
Oil Mania slots game has a gamble feature which allows a user to gamble his winnings. For that end, he should guess colour (red/black) or suit (diamonds, hearts, spades or clubs) of the next card from the deck. If a gambler guesses a color, a prize is doubled, the right choice of card suit increases winnings by 4 times. But if he fails, he completely loses all wins. Prizes may be gambled up to 5 times as well as in the popular Golden Goddess free slot game with no deposit and no registration needed. Also, try to play Double Diamond slots online for free with 1 payline and particular game bonuses.