Alien Invaders
Play Alien Invaders Online Slot For Free
Alien Invaders RTP — 94.05%-96.50%
Alien Invaders by Pragmatic Play offers a quirky and unique spin on space-themed slots, blending adorable alien visuals with an unconventional reel mechanic.
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About the slot
Despite the lighthearted design, the game packs a surprising punch with high volatility, an engaging tumble system, multipliers, and explosive free spins. While it may take a few spins to adjust to its bottom-row win mechanic, Alien Invaders rewards players who stick around with gradually intensifying gameplay and a persistent win multiplier during bonus rounds.
Gameplay & Mechanics
The action takes place on a 5-reel grid, where 3 to 5 symbols land per reel. Wins only trigger when three or more matching symbols appear on the bottom row, which then activates the corresponding reels for further matching opportunities. This bottom-row requirement gives Alien Invaders a strategic twist not seen in traditional slots.
The game includes a tumble mechanic, meaning symbols that form a win disappear, allowing new ones to fall into place. Each spin starts with a win multiplier of x1, which increases as symbols explode—either through tumbles or from scatters reaching the bottom.
Players can place bets from €0.20 to €240, and the RTP sits at 96.5%, with an option to increase the chance of triggering free spins by activating the ante bet (+25% cost).
Features
Wild Symbol
Appears on the middle reel (base game) or middle three reels (free spins). Wilds substitute for other symbols when they hit the bottom row and can carry random multipliers from x1 to x25, or up to x100 in free spins.
Scatters & Explosions
Scatters that reach the bottom row explode themselves and all adjacent symbols, paying out accordingly and contributing to the tumble count.
Win Multiplier
Every 10 exploded symbols increase the global multiplier by +1. Wild multipliers are also added to this.
Free Spins
Triggered by landing 3 or more scatters, starting with 7 spins, plus +3 for each scatter beyond the third. During free spins:
Reel sizes can grow to fit up to 5 symbols each.
The win multiplier is persistent.
Wild multipliers are boosted (x1–x100).
Bottom-row scatters add +1 free spin.
Bonus Buy Options
65x your bet for regular free spins
400x for super free spins with a starting x50 multiplier
Alien Invaders Screenshots
Theme & Graphics
The design of Alien Invaders is playful and clean, with cartoon-style aliens reminiscent of Reactoonz rather than threatening invaders. The background feels interstellar without being overwhelming, while the sound effects strike a balance between classic arcade and futuristic ambiance. The visuals evolve with reel expansions during the bonus round, adding more movement and life to the grid.
Alien Invaders might look like a harmless little slot, but once you dig in, it reveals a surprisingly clever structure that builds toward impactful bonus rounds. The combination of tumbling symbols, multiplying wins, and explosive scatter mechanics adds a satisfying rhythm to the gameplay. It’s not for everyone—especially those craving instant action—but players who appreciate a slot with a bit of depth and buildup will find Alien Invaders worth the orbit.
- Unique bottom-row win mechanic adds strategy
- Persistent multiplier and reel expansion in free spins
- Engaging visual style and clear animations
- Win values are low outside of bonus features
- Base game can feel slow until features activate
- May take time to adjust to the atypical pay structure
FAQ
The RTP is 96.5%, with higher volatility and a chance to increase bonus frequency via the ante bet.
Collect 3 or more scatter symbols during a base game spin to activate Free Spins, starting with 7 spins.
Yes, you can buy standard Free Spins for 65x your bet or Super Free Spins for 400x.
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Alien Invaders might look like a harmless little slot, but once you dig in, it reveals a surprisingly clever structure that builds toward impactful bonus rounds. The combination of tumbling symbols, multiplying wins, and explosive scatter mechanics adds a satisfying rhythm to the gameplay. It’s not for everyone—especially those craving instant action—but players who appreciate a slot with a bit of depth and buildup will find Alien Invaders worth the orbit.