"They came from another planet" is a twin-stick, fixed shooter, bonus hell, cat adventure, pixel art, shoot 'em up game that is available for Windows. The game is developed by lillmagnus and is licensed as a full version.

In this game, you play as a blue house cat with a stretchy head who is the last defense against the invading aliens. The objective of the game is to shoot aliens and collect falling stars to level up and get stronger. With each level up, you get more stars, points, and become more powerful to fight against the alien invasion. You can also stretch your head to collect more stars, but be careful as it makes you an easy target for the enemy. The game is inspired by old arcade classics and has a risk/reward-based gameplay where reckless gameplay can lead to being rich, but safe gameplay can ensure survival.