After S.T.A.L.K.E.R. 2 was cancelled earlier this year, former members of developer GSC Game World went on to found Vostok Games and announce their own post-apocalyptic shooter. It's now revealed a little more of the free-to-play MMOFPS Survarium, with the first screenshots and a video developer diary going into its story, skill system, and various competitive and co-op modes.

Yes, Survarium's own apocalypse is the result of mysterious rampant floral overgrowth and a deadly herbicide wonkily deployed to stop the world from being engulfed in forest. With most of the world's population dead, things all went a bit pear-shaped, and everyone's scrabbling for survival.

Enter you, dear player, doing missions for various factions. This gets you cash and experience, which are used respectively to get cash and ammo and to improve your skills. The five skills are firearms training, physical training, medical knowledge, technical training, and knowledge of the new world, which helps you plunder artifacts and avoid anomalies.

Three modes are discussed in the dev diary. In team combat, rival factions must scavenge parts to build a device to protect against an impeding storm--which both teams can fail to do. Co-op missions will have you finding artifacts, defending convoys, researching anomalies, and more. Each misssion affects the next and ramps up in difficulty, so Vostok expects they'll take players two months to complete. Lastly, free play dumps you into a huge procedurally-generated map with 20-30 players, not to mention mutants, for you to explore and form alliances as you please.

Look, watch this, then hit up the official site and FAQ for more: