Wild Cauldron is an exciting online slot game designed by Quickspin. The game has a visually appealing design with alluring graphics set in a wizard's tower background. Some of the key features and mechanics of the game are:

- 6 reels, 4 rows and 4,096 ways to win
- Betting range from 10p to £100 per spin
- Winning symbols accumulate on the bottom of the reels and only they remain
- Progressive wild multiplier that increases up to 7x during base game and up to 20x during free spins
- Locking Symbol Tumble feature - non-winning symbols disappear from reels
- Expanding Ways feature - number of paylines increases progressively
- Free Spins - triggered by landing at least 4 potion bottle scatters and can be re-triggered
- No progressive jackpot but max win potential is up to 21,199.5 times your stake

Symbols:

- Different colored monsters and low value rune symbols
- The highest paying monster is red with devil horns

Paytable:

- Red horned monster - Pays 3.5x for 6 on a payline
- Orange monster - Pays 1.5x for 6 on a payline
- Yellow monster - Pays 1.2x for 6 on a payline
- Green monster - Pays 0.8x for 6 on a payline
- Blue monster - Pays 0.7x for 6 on a payline
- Rune symbols - Pay between 0.5x and 0.4x for 5 on a payline

Pros:

- Locking winning symbols tumble
- Expanding ways and progressive wild multiplier up to 7x
- Free spins with progressive wild multiplier up to 20x
- High volatility and 21,199.5x max win potential

Cons:

- Might be too volatile for some casual players

Overall, Wild Cauldron is a great game for those who enjoy high volatility games with the potential for massive payouts. The bonus features work seamlessly together to create an exciting and engaging gameplay experience, with both the Expanding Ways and Locking Symbol Tumble features contributing to the potential for big payouts. The free spins feature with its increased wild multiplier potential is also a great way for players to boost their winnings. However, because it is high volatility, it may not be ideal for casual players looking for a more steady and predictable game.