Quick Stats
| Provider | Urgent Games |
| Game Type | Video Slot |
| RTP | 88%-97% (varies by casino) |
| Volatility | Medium |
| Grid | 5 reels, 3 rows |
| Paylines | 20 fixed |
| Min Bet | £0.10 |
| Max Bet | £50 |
| Max Win | 5,000x stake |
| Features | Wilds with multipliers, Scatters, Free spins, Bonus game |
| Theme | Sci-Fi / Aliens |
| Platform | Desktop, Mobile, Tablet, Smart TV |
What Is Alien Invaders?
Alien Invaders drops you smack into an intergalactic showdown where cute, colourful extraterrestrials attempt to conquer Earth. The game’s tone is lighthearted rather than menacing, with alien creatures that feel more goofy than genuinely threatening. Set against a starlit space backdrop with swirling nebulae and distant planets, the visuals immediately transport you to another dimension.
This is a straightforward 5-reel, 3-row slot with 20 fixed paylines. No complicated mechanics, no confusing grid systems — just solid, traditional slot action. You match symbols left to right across paylines to win. The symbols include aliens of various types, flying saucers, brains, ray guns, and classic card royals. The game favours simplicity, making it perfect for players who prefer classic gameplay over experimental features.
The appeal lies in its balanced approach: medium volatility means you’ll hit wins regularly enough to stay engaged without being battered by dry spells. The bonus features are straightforward — wilds, scatters, free spins, and an interactive bonus round where you shoot down alien spaceships. If you’re fatigued by slots with convoluted mechanics and you just want to spin, match, and win, Alien Invaders delivers exactly that.
RTP and Volatility
The RTP for Alien Invaders ranges from 88% to 97% depending on which casino you play at. This variance is unusual — most slots lock in a single RTP percentage. Check before playing to find the highest available RTP at your casino. An 88% RTP is below average; a 97% RTP is above average. The difference matters over thousands of spins, so hunt for the 97% version if possible.
The volatility is medium, striking a balance between frequent smaller wins and occasional bigger payouts. You won’t experience endless dry spells (high volatility), nor will you hit tiny wins constantly (low volatility). It’s balanced, which makes Alien Invaders feel rewarding without being frustrating. Sessions feel steady — you’ll experience natural peaks and valleys.
Paylines and Bet Range
Alien Invaders uses 20 fixed paylines. All paylines are active on every spin, so you’re always playing all 20. The minimum bet starts at £0.10 per spin, and the maximum reaches £50 per spin. This range suits casual players on tight budgets and high-rollers chasing big payouts.
Paylines run from left to right across the 5 reels. You need three or more matching symbols landing on the same payline to trigger a win. The paytable details exact payouts for each symbol combination, and that’s where you’ll find the max win potential: up to 5,000 times your stake (before multipliers kick in from wild symbols).
How to Play Alien Invaders — Step by Step
1. Choose your bet. Use the controls at the bottom to adjust your stake between £0.10 and £50 per spin. All 20 paylines are always active, so you’re betting across the full grid.
2. Review the paytable. Open the info menu to see all symbol values, wild rules, bonus triggers, and feature payouts. Knowing what you’re playing for avoids surprises.
3. Hit the spin button. The reels will spin and land symbols randomly on the 5×3 grid.
4. Match symbols on paylines. The game scans all 20 paylines automatically. Land three or more identical symbols on any line from left to right to trigger a win.
5. Land wilds for multipliers. Wild symbols substitute for other symbols and often carry multiplier values (x1 to x25 in the base game). These boost your win value.
6. Trigger scatter bonuses. Scatter symbols don’t need to be on paylines. Land three or more scatters anywhere on the reels to activate free spins or the bonus game.
7. Play free spins. Once activated, you’ll receive up to 10 free spins (more if you land extra scatters during the round). Free spins play like the base game — wilds, scatters, and multipliers all work the same.
8. Enter the bonus round. Landing three bonus symbols takes you to a secondary screen where you shoot down alien spaceships to win instant cash prizes. It’s interactive and adds variety to gameplay.
Pro tip: Use autoplay if you want hands-off spinning. Set your desired number of automatic spins and let the game run. You can stop it anytime.
Symbols and Payouts
Alien Invaders uses a mix of thematic symbols and classic card royals. The game splits symbols into tiers based on payout value.
High-paying symbols: Aliens (various species), flying saucers, brains. These pay the largest sums when you land multiple matches on a payline.
Mid-paying symbols: Ray guns, space-themed icons.
Low-paying symbols: Card royals (K, Q, J, 10, 9, A) styled with alien themes.
Special symbols: Wild (substitutes for all regular symbols, carries multipliers), Scatter (triggers free spins and bonus game, no payline needed), Bonus symbol (unlocks the interactive alien invasion round).
The exact payout multipliers for each combination aren’t published publicly by Urgent Games, so check the in-game paytable before playing. What matters: five aliens pay more than five 10s. The wild symbol is your friend — land it alongside high-paying symbols and the multiplier boost can substantially increase your win.
Wild Symbols and Special Features
Wild Symbol with Multipliers
The wild symbol replaces any regular symbol to complete winning combinations. What makes it special: it carries multipliers (x1 to x25 in the base game, potentially up to x100 in free spins). When a wild lands on a payline with other matching symbols, the multiplier applies to that entire win. A £5 win becomes £25 with a 5x wild. This is how bigger payouts form.
Scatter Symbol
Scatters don’t need to land on paylines — they can appear anywhere on the reels and still trigger features. Land three scatters to activate free spins. Land more scatters, and you might unlock the bonus game. The scatter is your ticket to extended play and bigger win opportunities.
Free Spins Feature
Landing three or more scatter symbols triggers free spins. You’ll receive up to 10 free spins per activation. During free spins, the game plays identically to the base game — wilds, scatters, and multipliers all function the same. Land scatters during free spins to retrigger the feature and add more free spins to your total. This is where many players score their biggest wins because the bonus can extend across many spins.
Bonus Game — Alien Invasion
Land three bonus symbols on the reels to enter the interactive Alien Invasion bonus. You’re taken to a second screen where your objective is simple: shoot down alien spaceships to win instant cash prizes. The bonus is mini-game style, adding interactivity that regular spinning doesn’t offer. Payouts vary based on which aliens you successfully eliminate.
Is Alien Invaders Worth Playing?
Pros:
Straightforward gameplay appeals to both casual and regular players. No confusing mechanics or hidden rules. 20 paylines provide plenty of win opportunities on every spin. Medium volatility delivers steady wins without prolonged dry streaks. Flexible bet range (£0.10 to £50) suits all bankroll sizes. Interactive bonus game adds fun beyond spinning. Decent RTP (up to 97% at some casinos) offers fair long-term returns. Free spins feature retriggerable, extending play sessions. Works flawlessly on all devices — desktop, mobile, tablet, smart TV. Sci-fi theme is vibrant and engaging without being overdone. Wild multipliers (up to 25x or higher in free spins) create genuine big-win moments.
Cons:
RTP varies wildly between casinos (88%-97%), so you need to hunt for the best version. Some casinos offer low RTPs that harm your long-term returns. Base game can feel repetitive if bonus features don’t trigger frequently. Free spins aren’t as generous as some competitor games (10 spins max feels modest). Max win of 5,000x is decent but not exceptional for modern standards. Lack of published payout tables makes understanding exact symbol values difficult. No buy bonus feature to accelerate access to free spins if you’re impatient. Wild multipliers in base game are modest (max x25), limiting huge payouts without bonus triggers.
Alien Invaders is a solid, uncomplicated slot that delivers reliable, balanced gameplay. If you’re tired of slots with convoluted mechanics and you value straightforward, honest payline slots with decent features, this game checks all the boxes. The medium volatility keeps sessions feeling fair, and the interactive bonus adds personality. Hunt for the 97% RTP version and you’ve got a fair deal. It won’t blow your mind, but it will keep you entertained and give you realistic win chances. Perfect for players who want familiarity, sci-fi vibes, and no surprises.
Responsible Gambling
Alien Invaders uses a certified random number generator (RNG) to determine all outcomes. Every spin is independent; past results don’t influence future ones. No pattern can be predicted or influenced by bet size, timing, or any other factor. Set a budget before you play and stick to it. Never gamble with money you can’t afford to lose. If you feel your gambling is becoming a problem, contact local responsible gambling services or use casino self-exclusion tools for support.
About Urgent Games
Urgent Games is a software provider known for creating accessible, quality casino games optimized for all devices. Their portfolio spans diverse themes — from sci-fi to classic to fantasy — with a focus on smooth gameplay and solid graphics. Alien Invaders exemplifies their design philosophy: engaging visuals, straightforward mechanics, and genuine entertainment without gimmicks. Their games are licensed and regularly audited for fairness, ensuring players get a trustworthy experience. Urgent Games competes in a crowded market by prioritizing simplicity and player-friendly features, making their titles appealing to both casual and experienced slot players.