It's something I really wanted, but the gameplay is so, so wonky on my windows 10 machine. All the dinos seem to be stuck walking in place forever, petting them is worse than retro pixel hunting point and clicks (it's like 4 pixels in a random place of a sprite, that's not even always a dinousaur - e.g. could be under head) and it makes my old-ish work computer's fan spin like crazy (which is fair for a modern game, but on the other hand the game is drawing like 6 sprites at a time and could run on NES). Sometimes the dino "avatar" on the list is not present and it seems like eventually all my dinos fall into 0%,0%,0% coma (is this death? they are still twitching lol).
Most of the time I can't use the overlay mode without clicking the app icon on tray first.
I hope it gets fixed, because I don't think anybody else is doing this concept. 1.5.4 is impossible to play - at least in overlay mode, which was the main selling point for me.