Green Eye is religious force that believes in power of toxic crystal, Dytophate. They regard all others as heresy except for them. The main character must escape from the prison that they manage.
But Green Eye is not the only enemy.
Space pirate, Electrophorus is raiding the prison. You can escape or intervene while Green Eye and Electrophorus are fighting.
Prison of the Green Eye is a classic-style, platformer shooting game featuring a modern style. It is a story of escaping behind the sacrifice of a friend in a prison of a fanatical group, and it is a story that must continue to fight against the enemies that are out there and who are numerous.