Before you start playing, it helps to know exactly how the slot bonus rounds are triggered. At Spin-kings, these rounds typically activate after you have wagered a minimum of £0.20 per spin. The bonus round indicator appears on the right side of the reels. Once three scatter symbols land on an active payline, you are moved into a separate, higher-volatility round. This mechanic is not simply a free game—it uses your existing bet amount and applies a multiplier between 1.5x and 10x. The average RTP across all bonus rounds at Spin-kings casino sits at 96.4%, which is slightly above the industry baseline. To maximise your chances, always check the bonus round contribution bar located above the spin button. When it is full (100%), the next spin is guaranteed to enter the bonus stage.

Follow these steps to ensure you do not miss any feature during a bonus round. First, log into your account and set your preferred stake—anywhere from £0.20 to £5.00 per spin. Second, locate the “Bonus Boost” icon in the top menu and click it. This opens a panel showing your current wagering streak and the number of bonus triggers left. Third, spin the reels normally. When the bonus round begins, the background changes to a gold theme and a countdown timer of 15 seconds appears. During this window, you can choose to double your stake for that round only. Fourth, after the bonus round ends, the system automatically returns you to the base game. A written summary of your bonus earnings (in GBP) is shown on the screen. One common problem is that the bonus round does not trigger if your account balance is below £1.00. Keep your balance above that threshold to avoid interruptions.
To withdraw any winnings earned from bonus rounds, you must first complete a full KYC (Know Your Customer) verification. Below is a table of the documents required, their acceptance status, and typical processing times.
| Document Type | Accepted Formats | Processing Time | Minimum Balance Required |
|---|---|---|---|
| Government-issued ID (passport or driving licence) | JPEG, PNG, PDF (max 5 MB) | Up to 24 hours | £10.00 |
| Proof of address (utility bill or bank statement) | PDF only (dated within last 3 months) | Up to 48 hours | £10.00 |
| Payment method proof (screenshot of e-wallet or card) | JPEG, PNG (must show last 4 digits) | Up to 12 hours | £20.00 |
If you use the spin-kings promo code during sign-up, you can bypass the initial deposit step, but you still need to submit at least one form of ID before your first withdrawal. Withdrawal limits start at a minimum of £10.00 per request, and the maximum per week is £2,000. Payment methods include Skrill, Neteller, Visa, and Mastercard. E-wallet withdrawals are usually settled within 2 hours, while card withdrawals take 3–5 business days.
The bonus rounds at Spin-kings casino are not identical across all game types. Some slots offer a fixed bonus multiplier, while others have a progressive system. Below is a breakdown of the two main bonus structures and their associated steps.
For both types, a spin-kings free spins offer may be available on Tuesdays and Thursdays if you have wagered at least 50 times in the past week. This gives you one free entry into a progressive bonus round without using your own balance.
Several players report that the bonus round screen freezes after the countdown timer ends. Here is a list of troubleshooting steps you can perform yourself before contacting support. Ensure your browser is updated to the latest version (Chrome 122 or later, Firefox 123 or later). Clear your cache and cookies, then reload the game lobby. If the bonus round still does not start, check your internet connection speed—it must be at least 5 Mbps. Another frequent problem is that the Spin-kings no deposit bonus cannot be used in combination with a regular wagering bonus round. The system automatically prioritises the no deposit bonus if you have one active. To switch back to normal rounds, you must use or forfeit the no deposit bonus first. If you have a Spin-kings bonus code entered, verify that it has not expired—most codes are valid for 14 days from issuance. Finally, and most importantly, always read the terms linked to the bonus round because wagering requirements change monthly. For full details and the latest updates, visit spin-kings.gb.net directly from your browser.