Evil Genotype Slot Free Spins & Bonus Features
You'd be forgiven for thinking this game has no bonus features since it has no Scatters, but it's quite the opposite. You'll win 30 free spins when the Human Toxicity Indicator fills up. Whenever you land on a Virus Robot overlay symbol, it will move one position to the left with each spin, and the human will shoot at it. If the Virus Robot is successfully destroyed (which will happen when the wild symbol lands), you win a re-spin with a sticky Wild and a random win multiplier up to x9. If the Virus Robot reaches the human, it will fill up the Toxicity Meter with two points.
It seems that this way to trigger the free spins bonus game (especially since the prize is 30 free spins) is much better than the usual Scatter-triggered feature. You can reach the free spins game after 100 spins in the Evil Genotype slot, and you can also predict when it will happen. Even if Virus Robot doesn't reach you to fill up the meter, you'll still get re-spins with sticky Wilds. The free spins themselves are nothing special, just a bunch of spins that are free, and you can expect to win maybe 20x or 30x your bet unless you were really lucky. Virus Robot doesn't appear during the free spins, so there are no re-spins or win multipliers either.