Alien Hunter is a shooting-based slot machine game from Spade Gaming with a unique, level-based game system. You begin by choosing which level you want to play – junior, expert, or Godlike, before placing your bets accordingly. Your job is then to hunt creatures in exchange for cash prizes.

To play Alien Hunter, you need first to pick a level and then place your bets. The game's premise is to hunt the various creatures in the base game, with animals, aliens, and the fallen hunter all to look out for. When you shoot a creature, you can earn a payout, which corresponds with the symbol's value.

There are lots of different symbols that you can target when playing Alien Hunter. The low pays include various animals, including a mouse, rabbit, squirrel, sheep, monkey, turtle, and deer, offering x2 – x14 the bet. The elephant is the highest-paying animal, paying out between 50 and 100x the bet, while the Alien offers the same payout. If you can find and kill the Fallen Hunter, you can earn 888x your bet.

There are a few special symbols to look out for in Alien Hunter. If a special symbol lands anywhere in the game, you can earn between 10x and 300x your bet. The turbo blaster symbol loads you with between 30 and 100 free bullets, which increases your chances of winning prizes. The final special symbol to consider is the Bio Crawler, which awards up to 100x the bet and helps to kill any creatures in its vicinity.