Inside the play area, the appearance of spaceships is constantly being attacked by aliens. Flying aimlessly through the battle are alien heroes. The play area's blue light circle is surrounded by a shade. Because alien invaders have to attack spaceships as soon as they appear, players need to quickly click on a spaceship when one appears. Doing so helps alien invaders focus on attacking the spaceship as soon as possible. Additionally, the appearance of a spaceship is unpredictable and not set in stone. Aliens race at high speeds with blinding lights trailing them. Colors associated with their power-generating system shine along the light streaks.

Idle Alien’s many aliens confuses you because you have to unlock different hero cards through the game’s levels. Each hero card has a different price and color depending on its strength. Eshu appears as a yellow creature with blue bloodshot eyes. Obgu resembles a human being with red legs and arms. Hero Las resembles an extraterrestrial with blue clothing and big round eyes. As a hero, Qusul wears white clothes and carries a blue orb of power. Additional heroes are ready to be unlocked by the player.

The Idle Alien supportsplayers with four main systems geared toward providing support next to the Aliens section. These Boost Systems sit next to the Alien section as cards. Each one boosts different aspects of the game. The name of the X2 Damage effect, Double Damage, hints at the first card. It allows battle heroes to deal 10x their normal damage in a battle. Additionally, Tap Boost increases the damage dealt by x10 when a card is tapped. The game's last tap is Double Speed, which increases the speed at which all alien characters fight by one. It is also referred to as Double Gold, which provides double the amount of money won each time.

Alien war participants take on symbolic form by coexisting with spaceships scattered throughout their occupied lands. Spaceships in different configurations can be found throughout the war-torn area. The control center can appear as a four-petaled flower, an octopus with elastic tentacles, or a mysterious arched gray machine. While the Aliens careen across the screen at breakneck speed, these ships float across the screen without haste. Idle Alien doesn’t use gold coins with a five-pointed appearance like other games. Instead, the coins look like small five-pointed stars when worn in the shape of an attack. Whenever the player deals damage to the spacecraft, players collect two and three stars. Acquire more stars by attacking enemies and taking turns. Doing so increases the number of Heroes you can buy or recruit from other races. Buying or recruiting powerful Heroes with large attacks boosts their combat power. The top blue column indicates the enemies health. When it runs out, you're close to winning. Evolve your Aliens heroes with additional power by upgrading their gear. Download the Idle Alien mod to destroy alien spaceships operated by malevolent aliens. ———