Project Tetra is planned to be released on Steam for free after the multiplayer update goes live (a few months). This is a period of open beta so that I can get feedback. The “Free-To-Play” aspect is planned to be only cosmetic (like skins for characters or weapons) and that paying money does not affect the gameplay in any way. Our dev team is 2 people. Myself (ProjectTetraDev) and my partner (ProjectTetraDesigner) are the only people that are working on this project.
So far, the game has taken since February 2017 and our designer joined at December 2017. All the programming is done by me, and my partner makes some of the maps (Like Crater and Lakemere, the Arena Royale map) as well as some of the weapons coming soon.