The key in the dungeon doesn't work. You throw the switch and come into the cell from the back way. (see the related question)
You can't.
Merlin the mechanical owl will recover the fuel cell for you. Feed him a robot mouse and he will retrieve the dropped fuel cell : point to him, then to it.
All you can do is open the back way to the cell in the dungeon, by throwing the switch. You can get in the "back way" through Mordred's underground lab. (see related question)
The cell is only "blocked" by the bars on the dungeon side. When you throw the switch, it opens the back gate, which leads to Mordred's underground lab. (see related question)
In Mordered's lab, take the owl with you into the tunnel and let him go on the other side of the bars.
The bars you see from the tunnel in Mordred's lab are the back bars of the dungeon cell where the robot invader is being held. When you get the cheese from the dungeon, you have to throw the wall switch that opens it. You can push through the dirt wall to reach the cell. You will need the owl to retrieve the fuel rod from the robot.
When you enter the underground laboratory, go outside and feed the mouse to the robot owl. He will follow you and can retrieve items. When you enter the cell, the robot invader self-destructs and the vial (fuel rod) is thrown clear. Click Merlin and then click the vial, and he will fly through the bars and get it for you.
In the dungeon under the castle library, pick up the cheese and pull the switch that opens the back gate of the cell. In Mordred's underground lab, once you feed the mouse to the owl, you can go down the passageway to the cell gate. Next to the bars, the wall is dirt and you can just push it down.
you use the cane by the bars
Go to the library in the castle and get underground. (for more info on this, ask another question.) Then click on the switch. On the other side of the jail bars, the sewer bars go up. Then go to the field where the mill is and use the key (for more info on the key, ask another question) to open the sewer in the ground, which is between the haystacks. then go inside. walk to the left and push the dirt wall. then keep going left. go inside the small hole at the end of the dirt hallway. you are in the jail cell! click on the "invader" and it will explode.
get action replay
You just keep on making gold bars and then you unlock all of the games!I am currently working on unlocking the elephant game!