Guild Wars 2

you can read up on the topic here

http://medieval-castles.org/index.php/attacking_a_castle

the basic idea would be adding these type siege for use with smaller groups of 3 to 5 to attack Towers Only…Keeps and Stonemists would not have any effect on them if these are deployed. You will need a bare minimum of 3 players to operate the siege adding to the fact that these are designed for Roaming parties.

these would be more of a sneak attack where towers are left undefended and would take a bit of time to make the attack work and would not signal an attack until the party is inside….unless you are found out before you get inside.

Down side, if you are a class that can port…all porting abilities would go on cooldown as soon as a successful breakin occurs…no porting the waiting zerg.

Also some of the Towers have a natural defense against each of these siege’s… Since you have to be sneaky to make it work you have to go around to the side that is not viewed by many people to get it to work to begin with. So if the backside is on a rocky area digging will not work or if the side is on a cliff to high for the ladder it will not work and or a combination of the two.

I am not a all day WvW expert like many of the people who play exclusively in WvW, so I value your ideas to make the idea work correctly in the setting that I am suggesting it for. Please share your thoughts on how to make the idea work. If you can find a fault with the idea please share a way to fix the part as you see broken.

I am not sure about free range versions. A little to difficult.

However I could see dedicated sapper spots that could be added. These could be used to tunnel to the wall and set up explosives.

I’m thinking lore wise that is some repurposed dredge tech. Add in a little asura tech to show users ideal dig sites and then guide the drill while underground.

Gameplay wise you buy the seige as normal. Activating the blueprint works as normal except it also gives you a buff that let’s you see icons on the ground (think like guild treks) showing where it can be deployed. Supply is then dropped in like normal. Once completed the drill takes off and must be guarded, and maybe occasionally kicked because it stalled. If it gets under the wall the bomb on board explodes doing massive damage to the wall and filling the tunnel back in.

Warning signs there is a sapper coming would be seeing the drill site open as well as seismic disturbances similar to what dredge and wurms show while burrowed.