Offendron Warrior is a side-scrolling arcade shooter inspired by Defender.

The Offendrons are robotic aliens that attack other planets and make colonies to siphon the resources they need for their survival. In 3045, Offendrons had arrived and attacked the earth, to make their 255th colony. Within a year the Earth had successfully been taken by Offendrons.

However, the humans hadn't given up. Some people had escaped to their Mars base and developed a virus that turns Offendrons into brainless killing machines who can only think about destroying other Offendrons. When The fate of Offendrons came to a crisis point, Offendron Warriors, who are capable of greater firepower and transforming for various combat situations had appeared. Their mission is fighting with over one million human war machines and protect the Offendron civilians from the deadly virus. You must save your friends from the human war machines.

You can transform into Interceptor and Offender.

In Interceptor mode, You can fly very quickly to save Offendrons or fight with enemy fighters.

In Offender mode, Your thrust speed decreases but you can fire your laser much faster (manually pressing the button fires the laser faster than just holding it.) and you can fly up or down much quicker. Offender mode is recommended for fighting with a large number of enemies or performing precise movements.

You can also use Smart missiles and Hyperspace.