Build and Shoot

Tug of War (TOW) is a game mode similar to Territory Control in which teams must capture the control points in a lined order. The team to capture and hold all control points wins.

This game mode comes with PySnip/pyspades by default, so simply set game_mode to tow in your config.txt to enable it:
Optionally adjust cap_limit in config.txt to change how many wins trigger a map change:
I suggest setting cap_limit from 1 to 3 because a single round can go on for over an hour when the teams are balanced.