Book of Dead looks simple: five reels, ten paylines, a tomb-raiding theme and a scatter that opens free spins. That simplicity is exactly why new players misread it. The slot’s most talked-about mechanic, the expanding symbol in the bonus round, is widely described as a choice you make. It is not. Once you understand what the game actually decides for you, and what it leaves in your hands, the slot becomes far easier to play sensibly. This primer covers the two things beginners most often get wrong: the random expanding symbol and the gamble feature.
The expanding symbol is drawn at random, so there is nothing to pick
During the free spins round in Book of Dead, one symbol is selected before the spins begin and can expand to cover entire reels when it lands in a winning combination. Plenty of guides frame this as a strategic moment, implying you can steer the game towards a high-paying symbol such as the pharaoh or the god. That framing is wrong. The symbol is drawn at random by the game’s random number generator, and the draw is repeated each time you retrigger or start a fresh set of spins. You are not choosing anything, and no amount of tapping, timing or “feel” changes the outcome.
This matters for two reasons. First, it removes a false skill ceiling that leads new players to believe they are playing badly when a low-value symbol is drawn. If the ten, jack or queen is selected, the round is simply weaker on average than one where a premium symbol is drawn. That variance is baked into the design, not into your decisions. Second, it means you should judge the bonus round by how many spins you get and which symbol appears, not by anything you did during it. Treat the expanding symbol as a reveal, not a decision.
The practical takeaway for beginners is to stop hunting for tips about “which symbol to pick”. There is no pick. What you can control is the stake you bring into the round and whether the slot fits your budget. A UK online casino running Book of Dead will typically let you spin from a few pence up to several pounds per spin, and the volatility is high, so the bonus round can be long in coming. Set a session budget before you start and treat every free spin as a chance event rather than a puzzle to solve. If you want to compare where to play, BestOdds UK provides sports betting markets alongside casino content and holds UKGC licence 66479, which puts it under the same player protection rules as any licensed operator; checking the bestodds promo code before you sign up is a sensible first step.
The gamble feature doubles your risk and usually works against you
After any winning spin in Book of Dead, the game offers a gamble feature: you can risk the win on a red or black card guess, or a smaller chance at picking the right suit. Win and the amount doubles; lose and it is gone. Beginners are drawn to this because it feels like a shortcut to bigger returns. Look at the maths instead. The red or black gamble pays even money on what is close to a coin flip, which means the expected value is roughly neutral before any house edge is applied, and the suit gamble pays more but lands far less often. In practice the feature is usually negative-EV, and repeated gambles compound that disadvantage.
There is a second cost that is easy to miss: gambling a win removes it from your balance and puts it back into play at a higher stake than you originally chose. That distorts your staking plan and makes sessions run hotter than intended. A sensible rule for new players is to decline the gamble entirely for the first few sessions and see how the base game and free spins perform on their own. If you later want to try it, cap it at one gamble per session and never gamble a win you would be annoyed to lose. The button exists because it is exciting, not because it is smart.
Understanding this pairs naturally with understanding the bonus itself. Book of Dead’s free spins are triggered by three or more scatter symbols, and the round is where most of the slot’s return is concentrated. BestOdds UK offers a £10 free bet and 250 free spins as part of its welcome offer, which is a low-cost way to get familiar with a slot’s rhythm before staking your own money. New accounts need a £5 minimum deposit, Apple Pay is accepted, and the promo code bop20x10fb unlocks the £10 free bet while bop5x50fs unlocks the 250 free spins. Read the wagering terms attached to any casino bonus before you claim it, because free spin winnings usually carry playthrough requirements.
If you want to build familiarity with high-volatility slots in general, Book of Dead sits alongside titles such as Big Bass Splash, Sweet Bonanza and Gates of Olympus in the same risk bracket. Megaways slots and jackpot games carry their own volatility profiles, and table games offer a lower-variance contrast if you want to slow the pace. BestOdds UK provides a mobile casino experience and a sportsbook, so you can move between formats without changing accounts. Whatever you play, the responsible gambling tools matter more than any tip: BestOdds UK promotes responsible gambling via GamCare and BeGambleAware, and Gamblers Anonymous runs support meetings if play stops being fun. Use deposit limits, take breaks, and treat the gamble feature and the expanding symbol for what they are, a coin flip and a random draw. Play within a budget you have already decided you can afford to lose, and let the reels do the rest.