The PortalGun Wood & Stone is used to place the portals. Two portals can be placed and used to walk through to get teleported from one point to another. It can be used 100 times.
Portal Gun Wood & Stone (3655) – 6 double stone brick slab + 2 oak wood
The PortalGuns can be used to pick up blocks from the ground and move them to be placed somewhere else. There are four types of such guns:
The GravityGun can be used to pick up mobs and blocks from the ground and then bring them to the place where you want them placed. You can also choose to shoot them away. A bit more cruel, but fun!
Turrets are can be placed down and act as guards which protect from all intruders (even yourself). To manage the turret tap on it with the Turret Options item.
There are three discs added which all can be used to play music from Portal 2 using a jukebox.
If you feel more for some electronic music then try out the Portal Radio.
Jumper blocks can be placed on the ground and whenever you walk on top of a jumper you will be rocketed up into the air.
There are two types of gel blocks which will cause two different effects when walking or jumping on them.
If you jump on the Repulsion Gel Block it will cause you to automatically jump four more times (lower and lower) until ultimately stopping you from jumping.