In order to begin playing, gamers will first need to place a bet. Coin values range from 0.01 up to 0.25 per coin, and players can stake anything from 1 to 10 coins per line in this slot. The paylines are also adjustable, and this means that Cosmic Invaders has a minimum stake of just 0.01 per line, per spin; and a maximum stake of 75.00 per spin.
The scatter icon in the Cosmic Invaders slot is the purple alien. Landing 3, 4 or 5 of these icons anywhere on the reels, offers 6, 7 or 8 free spins, respectively. There is also an Alien Picking Bonus, which can be triggered by landing the UFO sign on the first and fifth reels. Cosmic Invaders contains a stacked wild, which can appear on the second, third and fourth reels, and replace all icons except those with special features.