Key for Castle Maker 1.1 is in the picture.
L is the action button
To change the material tap the material you want on the bottom screen.
I hope you enjoy this little app. Have fun! I hope to see all of your castles soon!
Thanks @Zee, but it is just a creative game right now, you just build whatever you want. You did give me an idea though. I will probably incorporate that in 1.2, because I got so many yahs and at least one comment I will release ver. 1.1 in a little bit. All 1.1 is going to be is extra building pieces and a better way to switch your building block. Good idea Zee ;)