Idle Star Defender: Idle shooting war games

"Game introduction:
As the gateway to Earth, the star defenders should shoot and block the meteorites and invading aliens that fly to Earth in the Star War. Star Defender is an idle synthetic idle defense shooting war game
that upgrades the cannons by dragging and synthesizing different other cannons so as to resist the attack of star monsters! The game inherits the consistent gameplay of the tower defense idle shooting game:
build, destroy enemies, get funding and upgrade. But unlike other idle tower defense shooting games, it simplifies the operation into a synthesis that is super easy to get started. It is a casual time-killing game
quite suitable for players who love science fiction and idle shooting games.
How to play:
1. Use gold coins to build a cannon.
2. Two identical cannons can be synthesized into a more advanced cannon.
3. When the star monster is approaching the cannon, you can move the cannon away to avoid the its attack.
Games Features:
1. The coolest idle tower defense shooting game ,sound and vibration let you enjoy the real feeling
2. Unlock and synthesize more advanced weapons and let you enjoy the cool feeling
3. Easy to control, get started right away
4. Unlimited levels, the best game to kill the time
5. The monster is constantly changing, both stimulating and nervous
6. Slide your finger to play and challenge with friends
Become the cooliest shooter and see how long you can stay in this Star War?