Play Alien Invaders Online Slot

Alien Invaders takes a different route from standard reel slots, using a 5x5 grid where wins begin from the bottom row. The game is available through London.bet’s online casino, with demo play and real-money options for players who want to try Pragmatic Play’s sci-fi slot format.

Alien Invaders Game Details

Alien Invaders is built around position-based wins rather than fixed paylines. Matching symbols need to appear along the bottom row first, then the matching symbols above them can be pulled into the same win.

The theme is light sci-fi, with alien characters, bright symbols and a grid that changes as symbols disappear and new ones drop in. The game is listed as high volatility, with a maximum win of 5,000x stake.

The main difference here is how the grid reacts after a win. Symbols can explode, new icons can fall into place, and the win multiplier can rise as more symbols are removed during the same spin.

Can you play Alien Invaders demo or for real money?

Alien Invaders can be explored in demo mode before you decide whether to stake real money. This is useful because the game does not work like a standard payline slot, and the bottom-row activation mechanic is worth seeing in action first.

The demo includes the main features, including tumbles, Wild multipliers, Scatter behaviour and Free Spins. If you move to real-money play, check the stake level, read the paytable and make sure you understand how symbols need to land before a win can form.

London Bet account tools such as deposit limits, timeouts and reality checks are available for players who want extra control around their sessions.

What is the Alien Invaders RTP?

The Alien Invaders information supplied for London.bet is:

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

Alien Invaders uses a 5x5 grid, but it does not use traditional paylines. Wins are triggered through the bottom row, and the result can then build as matching symbols are removed from the grid.

RTP is a long-term game percentage. It does not show what will happen on your next spin, and high-volatility games can move unevenly over short sessions.

What are the Alien Invaders bonus features?

Alien Invaders uses a bottom-row win system, tumbling symbols, Wild multipliers, Scatter explosions and Free Spins. These features are linked together, so one spin can change shape as symbols are removed and replaced.

How does the bottom row activation mechanic work in Alien Invaders?

A win can start when 3 or more matching symbols appear in the bottom row. Once that happens, all matching symbols in the activated reels can count towards the win.

This makes the bottom row important. Symbols higher up the grid only become part of the win if the bottom row has already activated that symbol type.

How do tumbling symbols work in Alien Invaders?

After a win, the symbols involved are removed from the grid. New symbols then fall into the empty spaces.

If the new symbols create another bottom-row activation, the tumble sequence continues. The round stops once no new winning setup appears.

The win multiplier can also increase during these sequences. It rises as more symbols are removed, giving the round more value if several tumbles connect.

How do Wild multipliers work in Alien Invaders?

Wild symbols can appear on the grid, but they become active when they reach the bottom row. When used in a win, they can substitute for other symbols.

In the base game, Wilds may carry multipliers of up to 25x. During Free Spins, Wild multipliers can be higher, reaching up to 100x.

How do Scatter symbols work in Alien Invaders?

Scatter symbols can land on any reel. When a Scatter reaches the bottom row, it explodes and can remove nearby symbols.

Those adjacent removals can help the grid change and may contribute towards the round’s progression. Scatters also play a key role in triggering Free Spins.

How do Free Spins work in Alien Invaders?

Free Spins are triggered by landing 3 or more Scatter symbols anywhere on the reels.

The feature begins with 7 Free Spins. Each Scatter beyond the third adds 3 more spins.

During Free Spins, reels can expand after a spin and stay expanded for the rest of the feature. Any win multiplier carried from the base game continues into the bonus, and Wilds can appear with multipliers of up to 100x.

If a Scatter lands in the bottom row during Free Spins, 1 extra spin is added.

What are the Alien Invaders symbols?

Alien Invaders uses alien-themed paying symbols, Wilds and Scatters.

The main symbols are:

• Bottom-row matching symbols: These start the main win mechanic when 3 or more matching symbols land along the bottom.
• Wild symbols: These can substitute for other symbols and may carry multipliers.
• Scatter symbols: These trigger Free Spins and can explode when they land on the bottom row.
• Regular symbols: Alien and sci-fi style icons form the standard paying symbols.

The paytable gives the full symbol values and explains how each feature is applied.

How to play Alien Invaders

Set your stake with the plus and minus controls, then press Spin. The game will drop symbols onto the 5x5 grid and check the bottom row for matching symbols.

Before playing, review:

• the stake controls
• the paytable and symbol values
• how bottom-row activation starts wins
• how tumbling symbols are removed and replaced
• how Wild multipliers work
• how Scatters trigger Free Spins
• how Free Spins can expand reels and carry multipliers

Spins start from £0.20. The game is simple to open, but the win system is unusual enough to make the paytable worth reading first.

Can you play Alien Invaders on mobile?

Alien Invaders can be played on mobile, and the grid format works neatly on smaller screens. The detail to watch is the bottom row, because that is where the win activation begins.

Before using a real-money stake from a phone, check that the grid, multiplier display and Scatter positions are clear. Free Spins can add expanding reels and higher Wild multipliers, so the game view is worth reviewing before you start.

What slots are similar to Alien Invaders?

Alien Invaders is closest to online slots with grid play, tumbling symbols, unusual win rules or multiplier-led features.

You may also want to try:

• Sweet Rush Bonanza
• Sweet Bonanza Super Scatter
• Gates of Olympus 1000
• Ice Mints
• Chilli Heat Spicy Spins
• Gold Party 2 After Hours