Now I know what your thinking, "Wtf, how is this possible?" Well, if you take advantage of the CTF mode and the game's mechanics and blocks, plus have creativity, you get this custom mode.
Alright, what is Siege Mode?
Siege Mode is when there are two points on the map, and the first point (middle) has the flag, and the Blue team will try to get it and capture the flag in the last point (which is red base). The red will try to defend the flag and their capture point.
Wait, What If The Red Gets the Flag?/Doesn't Defend?
To counter this, I have come up with two special methods/twists: incomplete walling and tunneling. Incomplete walling is when you place a wall, but delete the middle so players can shoot through the hole. Tunneling is when you make tunnels underground/aboveground. Using these methods, I can build barriers and tunnels and force players to stay where they can and play the objective.
Cool! How can I Play?
Currently, I am building the first map (named Castle Siege). I will update you guys when it is done (US Server) Unfortunately this mode will only be on the US server, but I'm thinking if I should bring this custom mode to the EU server.