I've beaten this alone, and co-op with my 9 year old son. Both instances were quite enjoyable, and the game can be very forgiving, giving you plenty of chances to regrow your army after an accidental mass drowning. It's a nice, chill game that can be beaten in 1-2 days, depending on how efficient you want to be, none of the puzzles are too difficult, and was a very good bonding game time with my son, which is something I'm always on the look for especially during this time.