Proving Grounds

Proving Grounds was the first map publicly available, and has been in the game since the Closed Alpha. With the release of Alpha 2, the map wasnt the built in default anymore (replaced with Kairos), but as of April 21 2021 it was available as a Custom map download, and the Davimap file was available to download for people to mess around with. On February 10th 2022, Proving Ground was added to online.

It was the only map that lets you edit how many cannons and rockets are on the map (dosent work anymore), and it's difficultly can rapidly change based on the settings you choose. It is also one of the only maps that restricts the Giants movement via a impassable border (the other one being Kairos, and the feature being togglable)

Trivia
This map seems like the basis for alot of earlier test maps, for example Powerup Pickup

There is an empty area right underneath the ground in front of the giant that the Warrior can get suck in it the Giant hits him straight down. This puts the Warrior in a position where they can attack the Giant, while the Giant is helpless

The earliest screenshot of proving grounds out there is this screenshot from 2019. It has early models of pretty much everything