The Joker Fire Frenzy is indeed a fun game consisting of 5 reels and 3 rows. There are 20 paylines paying from left to right. The game has a minimum bet of 0.20 and a maximum of 60. With a fairly balanced payout, the game runs on an RTP of 96.24% and has medium volatility. Not only this, but the game also lets you achieve the maximum win of 2000x for your initial bet.
The symbols pay between 1 and 37.5 x your stake for 5 of a kind wins, and a combination of any of the 3 top-tier single, double, and triple blazing number 7 symbols pay up to 3.25x your stake for 5 of a kind. The Star Wild can land anywhere to step in for pay symbols, and it will thus help to complete and/or improve wins. The wild pays up to 125x your stake should you land 5 wilds on the same payline.
You need 3 free spins symbols on reels 2, 3, and 4 to trigger the Bonus Round, and this triggers a spin on the Free Spins Wheel. You also win 1x your stake up front before the wheel spins, and the wheel gives you between 10 and 30 free spins. Most of the free spin segments go together with an x2 win multiplier, but if you win 25 or 30 free spins you get an x3 win multiplier. The multiplier boosts all regular line wins, but not the instant Epic Strike prizes.