rock, paper, shotgun did a great write up that I agree quite a bit with:
https://www.rockpapershotgun.com/ecos...

Ecosystem is a sandbox simulation game where you create an underwater environment and let evolution populate it with strange, beautiful, and even horrible creatures. The player is given controls to fully control the terrain, plant foliage, and seed animal life that will be driven mostly by evolution. For micromanagers there is a wildlife editor that allows the creation of specific fish and wildlife that you can name and categorize yourself. To date, there are no objectives (aside from a high score), and there is no guiding mechanics. You simply enter the world and mold it to your liking. For a game just entering early access it is fairly robust and free from any bugs (at least as far as I could tell). Filling out the game with more features and more things to do should be the primary objective of the designers. Perhaps even adding some targets to challenge players with. The aquatic life also needs a little fine tuning as many of the generated creatures from evolution would realistically have been DOA in the real world. Having a system that creates things that are more to the extremes of beautiful or horrifying would also be much more entertaining. Overall, I enjoyed this title and recommend it to anyone interested in playing in an aquatic sandbox for a few hours. The replayability is high here due to the evolution engine, but even that may wear out after a moderate amount of time due to the "sameiness" that a lot of the outcomes have.



A copy of this game was provided by the developer.