Castle Shikigami 2 Cheats

After unlocking nine credits through several hours of gameplay, you will be able to access the Extra Options section in the Options menu.

In this, you can change the following:
Size of enemy bullets
Speed of enemy bullets
Size of T.B.S. distance
Speed of the game itself
The patterns of the bullets during Extreme Mode

For each hour of gameplay you achieve, you will recieve an extra credit. After playing for 6 hours you will obtain freeplay.