Alien Invaders (Pragmatic Play) – Review & Demo Play

Alien Invaders Slot Overview

I went into Alien Invaders expecting a cute Reactoonz riff, then clocked how the marked bottom row changes everything. It's a 5-reel grid where each reel shows 3 to 5 symbols per spin, and wins start only when 3+ matching symbols sit on the highlighted bottom row. Winning icons tumble out and new ones drop. It plays high volatility with a 96.50% RTP, 0.20 to 240 stake range, and a max win of 5,000x, so sessions swingy yet capable.

Alien Invaders in Casinos:

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Alien Invaders Symbols and Paytable

Paytable maths is straight to the point. Card royals 10, J, Q, K, A pay 0.05x to 0.1x per symbol in a win. Four alien highs then step up at 0.25x, 0.5x, and 1x per symbol, which looks small until multipliers kick in. The wild is a purple menace that subs for everything bar scatters, but only when it sits on the bottom row. The scatter is a meteor that can set off chain reactions once it reaches that same row.

Here's the twist that shapes symbol value. When 3+ matches land on the marked row, the reels holding those matches turn active, and every matching icon on those active reels counts, whether on row two, three, four, or five. Those counted symbols then vanish via the tumble mechanic, letting fresh symbols drop for another crack. Symbols on non-active reels don't take part. It sounds tight at first, yet seeing chains build across active reels gives the grid a neat rhythm.

Alien Invaders Symbols and Paytable

Symbol	Quantity	Payout
	1	x1
	1	x0.5
	1	x0.25
	1	x0.25
	1	x0.1
	1	x0.05
	1	x0.05
	1	x0.05
	1	x0.05
	Wild
	3	x0.15
	2	x0.1
	1	x0.05
	Scatter

Global Multiplier System in Alien Invaders

The global win multiplier starts at x1 on every paid spin. It climbs by +1 for every 10 symbols blown away during tumbles or by a scatter detonation. If a wild reaches the bottom row carrying x1, x2, x3, x5, x10, or x25, that value adds to the global multiplier as well. All wins from that spin get multiplied by the current value, then the counter resets to x1 before the next spin unless you're in the bonus.

In free spins the global multiplier does not reset, so each batch of 10 exploded symbols steps it higher across the round. Wilds can turn up with far punchier numbers here, up to x100, and those add on contact with the bottom row. Super Free Spins bought at 400x start with x50 already live, which can turn early hits into proper totals if the grid cooperates. It's multiplier momentum that powers most standout results I've seen.

Alien Invaders Slot Features

Wilds appear on reel 3 in the base game, and reels 2, 3, and 4 during free spins. They're placeholders only when they drop to the marked row; above it, they sit inactive. In the base game they can carry multipliers from x1 up to x25. During the bonus, the ceiling rises to x100. When a wild touches the bottom row, its multiplier value gets added to the global multiplier and it can then help complete matches on the active reels.

Scatters can land anywhere, but they act only on the bottom row. When one gets there, it explodes and takes out all eight adjacent positions, diagonals included. Every removed symbol pays its listed value, then the tumble runs. Collect 3 or more scatters within the same paid spin to trigger free spins: 7 spins for 3, with +3 for each extra scatter. During the feature, reels start at 3 symbols high and can randomly grow to 4 or 5, then hold that size.

Each scatter that reaches the marked row during free spins gives +1 spin. The global multiplier persists across spins, so cascades early in the round can set up later hits. For more control, an Ante Bet adds 25% to the stake and doubles the chance of triggering the bonus. There's also a 65x buy for regular free spins and a 400x buy for Super Free Spins that begin at x50. RTP sits around 96.5% across these modes.

Bonus Buy Feature

Free Spins Pay 65x total bet to trigger the FREE SPINS feature.
Feature Cost:	x65 Bet
RTP:	96.49%
Volatility:	-
Super Free Spins Pay 400x total bet to trigger the SUPER FREE SPINS feature. In the SUPER FREE SPINS feature, the win multiplier starts at 50x.
Feature Cost:	x400 Bet
RTP:	96.51%
Volatility:	-

Gallery of video and screenshots of the game