https://www.reddit.com/r/FreeGameFindings/comments/1sguq0b/steam_ps4_xbox_game_graveyard_keeper/

https://store.steampowered.com/app/599140/Graveyard_Keeper/

Xbox better use region specific link (in this case US) due to not all region has that available to purchase.

https://www.xbox.com/en-US/games/store/graveyard-keeper/C11GZGMKRTCV

PS region links below, I'll add other region or better format this tmr.

NA https://store.playstation.com/en-us/product/UP0097-CUSA10727_00-GRAVEYARDKEEPER0

EU https://store.playstation.com/en-gb/product/EP0096-CUSA10811_00-GRAVEYARDKEEPER0

Asia https://store.playstation.com/zh-hant-tw/product/EP0096-CUSA10811_00-GRAVEYARDKEEPER0

Japan https://store.playstation.com/ja-jp/product/EP0096-CUSA10811_00-GRAVEYARDKEEPER0