Okay so i really enjoy tower defence and i have played it for, it must be over a year now, when it was back on the chunk. first of all i have encountered many players who do not know what they are doing therefore making my, and many others, time playing very frustrating. to fix this i think you should make all first time player sit through the tutorial (i haven't done the tutorial myself as i know what i'm doing, but it should involve how to correctly place towers and what towers to not put next to each other.) Secondly, a single player mode would be really, really awesome. Maybe you could have completely single player games, where one person faces wave after wave to try and get through the most amount of waves without loosing lives, or multi single player games where players have their own track and compete against other players in the same game to see who can survive the most waves (last one with lives left wins) and lastly i really hope you are bringing the co-op game to cubecraft as personally i love facing waves of mobs. thank you for reading and i really hope you consider solo tower defence :)