https://en.wikipedia.org/wiki/Creatures_(video_game_series) - basically the father of genetic games where you infuse two creature together and progressively they become more intelligent (they can even learn english than they can teach their children) you could get different breeds, they could spread mass disease..so on so forth
Basically its a game that inspired Black & White, Spores, Mewgenics so on so forth and watching the video of this reminded me a bit of the game.