You, and your team of 3 other people, are set to rob the Urbanopolis National Bank. Unfortunately, there's been a bit of a mixup, so every other bank robbery crew in the city is also planning to rob it at the same time. It's your job to secure your team's financial future against these meddling rivals by meddling with your rivals, be it via killing them, setting traps, or alerting other players.
Checkout this repository to garrysmod/garrysmod/gamemodes.
coi_* maps by default have the ability to function with COI. No setup required!
The workshop content collection (don't worry, there's not much!) can be found here.