One thing I noticed while playing and watching other people play is that eventually you're strong enough that most things simply don't pose a threat anymore and the game basically ends because there's nothing to overcome once you have your souped up farm and army of pigs/smallbirds. So my suggestion is that over time the world gradually changes to become more evil and distorted. Kind of like Eversion but in a survival game rather than a platformer. It serves to justify all the horrors you see occasionally popping out to attack you such as tree guardians. Some ideas (Though the devs can surely think of better): Grass becomes thorny and requires an axe to collect, it also hurts and slows the player if they walk through it. Jackalopes slowly start to become corrupted and act like aggressive mobs and drop Monster Meat instead of Morsels. Gobblers slowly change into a weird mutant monster that eats any food items it finds, meat, seeds, petals, etc. Crows eventually become aggressive towards the player and instead of flying away will start to peck at the player and don't drop Morsels anymore. Spiders eventually stop being scared of fire and have a larger chasing radius. Beefalo become territorial and will chase the player around if the player stays near one for too long (won't aggro the group however). Tentacles cease to be stationary and will sink into the ground and teleport next to the player (as long as the player is in swamp) after making an attack. Tree Guardians become progressively more common over time, naturally spawning ones also occur.