Alien Invaders - Real Money & Demo Play

Alien Invaders by Pragmatic Play introduces a new take on grid-based slots, where each spin unfolds across a 5x5 layout. Rather than relying on traditional paylines, this high-volatility release builds wins from the bottom up, triggering symbol explosions and multiplier growth in a dynamic cascade.

The design leans into a playful sci-fi aesthetic that prioritises action through structure. Players activate reels by matching symbols along the bottom row, prompting all identical icons in those reels to form part of the win and disappear. As symbols tumble and new icons land, the win multiplier increases for every 10 symbols removed, building momentum across the round.

Free Spins are awarded via Scatter symbols, offering a separate phase where multipliers persist between spins and wild symbols can carry enhanced values. With a max win of 5,000x and a layered approach to triggering features, Alien Invaders creates a structured, yet active experience for those seeking something beyond the typical space slot.

Available in demo and real money mode here at London Bet.

Alien Invaders Game Controls

Whether you’re exploring the demo or placing real money stakes. Here’s how to navigate the layout:

Set Your Stake: Use the + and – buttons to choose your total bet. Spins begin from £0.20, offering flexible options for most playing styles.

Check the Paytable: Tap the ‘i’ icon to view symbol values and learn how wins are triggered through the bottom-row activation mechanic. You’ll also find details on Free Spins and how wilds and multipliers work.

Spin the Reels: Once your stake is set, press the spin button to begin. Symbols will drop into place, with any winning sequences and feature triggers playing out automatically.

Adjust Audio: Use the loudspeaker icon to toggle sound settings, whether you prefer a quiet session or full effects.

Play Responsibly: At London Bet, we support safer gambling. Use account tools like deposit limits, timeouts, and reality checks to manage your experience.

Bottom Row Activation Mechanic

Alien Invaders operates differently from traditional grid slots. The 5x5 layout doesn’t rely on adjacent clusters but instead activates wins when three or more matching symbols appear in the bottom row. If this happens, all identical symbols across the reels become part of the win. Since each reel can vary in height (three to five symbols), outcomes shift with every spin.

Tumbling Symbols

Following any win, the contributing symbols are removed from the grid and new ones drop in from above. These cascades continue as long as new winning sequences are formed, offering a chain reaction effect with a new setup each time.

Wild Symbols and Multipliers

Wilds can appear anywhere on the grid but are only active when positioned in the bottom row. When used in a potential win, they substitute for other symbols and may include a random multiplier of up to 25x. Their role becomes more prominent during the bonus round.

Scatter Symbols and Adjacent Removals

Scatters can land on any reel and become more impactful when they hit the bottom row. If this occurs, the Scatter explodes, clearing adjacent symbols and counting them towards a potential win. This mechanic adds variability and helps increase the chances of cascading combinations.

Free Spins with Carried-Over Multipliers

Trigger the Free Spins feature by landing three or more Scatter symbols anywhere on the reels. The round begins with 7 spins, with 3 additional spins granted for each Scatter beyond the third. During the feature, reels may expand in height after a spin and remain that way for the remainder of the round.

Any win multiplier increases from the base game carry over into Free Spins, where Wilds can also appear with enhanced multipliers of up to 100x. If a Scatter symbol lands in the bottom row during this feature, you’ll receive one extra spin, keeping the round going.

RTP, Volatility & Stake Range

• RTP (Return to Player): 92.01%
• Volatility: High
• Bet Range: £0.20 – £5 per spin
• Max Win: 5,000x stake

Alien Invaders Demo Play

Alien Invaders is available to explore in demo mode at London Bet, giving you the chance to try out its mechanics before deciding to play for real money.

The demo version includes all core features, from the bottom row activation system to tumbling symbols and the escalating win multiplier. It’s a useful way to understand how symbols interact, how Free Spins are triggered and how multipliers carry through during the bonus round.

If you’re unfamiliar with cluster-style reels or simply want to get a feel for the game’s rhythm, demo mode provides a pressure-free environment to observe the gameplay in full.

Alien Invaders Summary

Alien Invaders takes a grid-based format and introduces a layered mechanic where positioning matters. Wins activate from the bottom row and each tumble offers the chance to shift the layout further.

The core focus is progression. Whether that’s through consecutive symbol removals, climbing multipliers or expanding reels during Free Spins, each step builds naturally. Wilds and Scatters behave with purpose and bonus features unfold without unnecessary complexity.

For players who prefer slots with structured visuals, reactive reels, and a pace that allows for observation between spins, this release offers an accessible route into a more strategic style of play.