Nighttime Free Spins ModeReceive 3 or more BARN symbols anywhere on the reels to trigger the Nighttime Free Spins Mode. During free spins, the BARN symbol acts as a wild symbol and multiplies any win it is involved in. The multiplier increases each time the symbol occurs successfully in a win, up to a maximum of 10x. Respins are not triggered during free spins mode.Drilling For Oil Click MeReceive 3 or more DRILL symbols anywhere on the reels to trigger the Drilling for Oil Click Me feature. Players are prompted to click on one of the 3 DRILL symbols to reveal an instant bonus money prize.Higher or Lower Bonus RoundOccur on reels I, II and V. Receive 3 OIL PUMP symbols on reels 1, 2, and 5 to trigger the Higher or Lower Bonus Round. During the bonus round, the player is prompted to guess whether the next number displayed will be higher or lower than the currently displayed number. Four hits or four misses ends the bonus round feature.Center Reel Respins FeatureDuring normal play, each time the player receives a winning combination on the reels, the prize will be paid out and then the center reel will automatically respin for free, giving the chance for even more wins. Additionally, a stacking payout multiplier is applied for the first respin, and if it wins the multiplier will increase, up to a max of 5x, and the center reel will respin again for free. If the respin results in a win, the player wins another free center reel respin until the respin does not result in a win. The multiplier will also be reset to 1x after the center reel respin does not win.