Interstellar Defense is a free Android game developed by RedForce Games that falls under the category of strategy games. The game is set in space, where players get to explore different planets and planetary systems while collecting resources. However, the game is not just about exploring. Players also have to defend their planets from alien species that are trying to take over and steal resources.

The game offers many features, including a wide range of weapons and power-ups that can be unlocked and upgraded. Players can choose their weapons strategically and even call for a meteor strike to annihilate enemy spaceships. The game has over 200 levels that are strategically designed and offer hours of fun and challenging gameplay. Additionally, there are 15+ planets to explore and defend, and an infinite survival mode in three different difficulties. The game also comes with achievements, leaderboards, and cloud save to resume progress anytime, anywhere.