It was published 4 years ago.Based on a custom GTA2 map called "Multislayer" made by "BenMillard".
All credit for textures and level design goes to him!
It's a work in progress although I probably won't waste any more time on it as it is clear that it can't become what I had in mind (open world map with drivable and self-driving vehicles).
Deadline to transfer to GTA5 is 6 March 2017 by the way!