@mattgrayyes adding to the recommendations:

• #openTTD for your #TransportTycoon needs
• #openXCOM for the classic #XCOM / #UFODefence suffering
• #Brogue for a colourful #roguelike
• #OneWayHeroics for a mix between a #rogueLite and an #ActionRPG, where you play a character from various classes who has to try to outrun the darkness swallowing up the world from the left, while gearing up and leveling up to eventually face the evil villain at the end.