Star Defence is a real-time tower defense game developed by steikum, available for Windows. The game is set in a 2D universe where players are required to place their own units, known as "white stars," anywhere on the map. The objective of the game is to increase the number of "black stars" observed while raising the "Civilization Level" of the planet.

Star Defence offers a unique gameplay experience where the player must optimize the balance between "white stars" and "black stars" to be installed and observe "black stars" more efficiently. The game requires the player to select and place units with the left mouse button and cancel the placement with the right mouse button. Players can move the camera with the right mouse button and drag or using the WASD keys. Zooming in and out is possible with the mouse wheel.

In Star Defence, units will only operate when the number of black stars minus the number of white stars exceeds the civilization level. To increase the civilization level, players must pay a certain cost. The game has ten levels, and clearing level ten is the ultimate goal.

Overall, Star Defence is a fun and engaging game that offers a unique gameplay experience. The game is well-designed and easy to play, making it a perfect choice for strategy game enthusiasts.