Sky Defender: Joe's Story is a defence-style arcade game developed for PC. The Campaign Mode will tell you Joe’s story and explain his role in the First Sky War. Step by step you will follow him from the battle for the last remaining province to the total wipeout of the enemy and establishment of peace in the Celestial Empire. The Survival Mode illustrates the most severe battles with Joe starring which were left out in the campaign mode. It is a sequence of waves with increasing numbers of enemy troops which makes you not only shoot but also think and consider a lot of things like prices for upgrades, repair works, jet volume and choice of weapons in various situations.