Killing in Space is a leisure space tower defense game available on iPhone. In this game, players are tasked with defending their space stations from waves of powerful enemies called Bobby. Each character's astronaut possesses unique skills, and as players progress through the levels and earn gold coins, they can strengthen their astronauts to become even more powerful.

The gameplay of Killing in Space requires players to strategically strengthen their astronauts and resist the increasingly powerful Bobby enemies. With each level, the challenge becomes tougher, testing the player's wisdom and tactical thinking. The goal is to successfully defend the space station and conquer all levels.

With its engaging gameplay and unique character skills, Killing in Space offers a challenging tower defense experience for players on the iPhone platform. Get ready to invest your wisdom and take on the Bobby enemies in this space-themed game.