City Defence Artillery is a Windows game developed by OA GAME STUDIO. The game is a classic action game where the player must defend 25 cities from enemy attacks. The enemy has all the air strengths, and the player must use their artillery to destroy enemy warplanes and bombs to save the cities. The game has an interesting feature that allows the player to improve their artillery and buy new air defense systems by selling the war score. Additionally, the player can call rocket systems for help and buy intelligent air defense systems to fight. City Defence Artillery is a challenging game that requires long-term strategic planning and quick reflexes to win.

The game is easy to play and has a simple interface that allows the player to enjoy the game without any complications. The graphics are well-designed and provide a realistic experience of fighting in a war. The sound effects are also impressive and add to the overall experience of the game. City Defence Artillery is a great game for those who love action games and want to experience the thrill of defending cities from enemy attacks.