by ELK StudiosReleased Oct 6, 2020
Alien invasion slot with a unique 25-reel bonus grid, wall multipliers up to 4,096x, and 10,000x max win. Quirky cartoon UFO theme at 96.1% RTP.

Game Type
RTP
96.1%
Volatility
High
Max Win
10,000x
Grid
5x5
Reels
5
Rows
5
Paylines
3,125 Ways to Win
Min Bet
$0.2
Max Bet
$100
Hit Freq
22.6%

Visitors pairs a goofy cartoon alien invasion theme - abducted cows, bug-eyed extraterrestrials, flying saucers - with one of ELK Studios' more inventive bonus systems. The base game plays on a 5x5 grid with 3,125 ways to win. Standard enough. The bonus game throws out that entire grid and replaces it with something different.
Two Respin scatters on reels 1 and 5 trigger a respin with two of three random features active. Big o Beam expands a paying symbol to a 2x2 or 3x3 sticky during the respin. Abduction adds a win multiplier up to 15x. Alien Attack places sticky Wilds onto the reels. Getting Abduction plus Alien Attack together is the ideal combination - multiplied wins on wild-heavy respins. The respin retriggers if conditions are met.
Three Bonus scatters (reels 1, 3, 5) launch the Alien Invasion. The entire game switches to a 5x5 grid of 25 individual mini reels. You start with 5 free spins.
Silver spaceships landing on a mini reel pay 1x bet and build a wall around that position. The wall starts at 2x and doubles with each subsequent hit inside it. Adjacent walls vertically merge and take the highest multiplier. Color upgrades from bronze to silver to gold to platinum track the escalation.
Golden spaceships are the real prize. No direct payout, but they double every wall multiplier on the board. And the self-sustaining part: each spin that lands at least one spaceship awards +1 free spin. So the bonus keeps feeding itself as long as ships keep landing.
Wall multipliers cap at 4,096x. Reaching that requires 12 silver ships in the same wall - unlikely, but the 10,000x total max win shows ELK built the math around these stacking multipliers going deep. Hit frequency of 22.6% keeps the base game active, and the 96.1% RTP is from ELK's pre-2022 era when they were still generous on returns.