While these aren't really "cheats" per-say, here are some helpful tips you may not know.
1. When you're making DIY recipes, speed the process up drastically by pressing the A button a few times in quick succession once your character starts crafting. Holding the B button will make animals talk faster too.
2. Pressing B while you move will make you run which can scare off bugs and fish. Any fish scared off by running or reeling in too early will count against Cast Master 3 achievement
3. Use Nooklink app to type in-game
Install the Nintendo Switch Online app on your real-life phone and you'll be able to type whatever you want to say using your device's keyboard. The text then appears above your character's head in-game.
Most people play Animal Crossing: New Horizons during the day. This is only logical, really, but the night is not only filled with different bugs, fish, and calming music but holds some secrets too.
4. At 3:33 AM on Saturdays, players watching their TV will be confronted with a UFO floating on the screen, interrupting the previous static. The alien comes forward and speaks in the same strange language as the villagers. The picture flicks between this and the UFO, and then at 3:34, it returns to the white noise.
5. Wasps Hate Party Poppers If a player holds one and shoots it at an incoming swarm, they will be frightened and disperse before getting a chance to sting players.
6. Gyroids Come With Shelving. They can be put on walls as decorative items as they will automatically have a small shelf.
7. Good Horoscopes Mean Many Bells
Sometimes Isabelle will tell players that she's been reading her horoscope again. This isn't just idle chitchat - it means that in the game it will be a good luck day. Specifically, find the glowing spot that allows players to bury a bag of Bells. The more, the better. In a few days, it will blossom into a tree and will triple the amount of Bells buried.
8. If an island is missing any personality types, then that personality is more likely to show up at the campsite.
9. Different Villagers Teach Different Emotes
Every personality type has different emotes they can teach. If you want all the emotes in game, it is best to have one villager of each personality type live on the island for a good period of time.
Normal villagers include Glee, Pleased, Fearful, Sadness, and Daydreaming.
Peppy villagers teach Mischief, Happiness, Aggravation, Sleepy, and Curiosity.
Snooty villagers teach Love, Amazed, Sighing, Thought, and Intense.
Sisterly villagers teach Confident, Laughter, Cold Chill, Apologetic, and Disagreement.
Lazy villagers teach Pride, Shyness, Mistaken, Bashfulness, and Sorrow.
Jock Villagers teach Flourish, Sneezing, Distress, Shocked, and Encouraging.
Cranky villagers teach Agreement, Worry, Inspiration, Sheepishness, and Bewilderment.
Smug villagers teach Showmanship, Dozing, Heartbreak, Smirking, and Resignation.
10. Using A Toilet causes the fruit meter to go down. This is convenient if players accidentally ingest any food items, but don't want to worry about digging up or breaking anything.
11. Talk To A Neighbor While Stung To Learn Medicine Recipe
If players get stung by a wasp, their face becomes messed up. Speak to a villager after having been stung, and they will provide a DIY recipe for medicine. It is a very easy one too - it only requires the wasp nest and three weeds.
12. Stone Axes will not cut trees down, but they will allow wood to be harvested from them. Iron axes will let players harvest resources too, but will cut the tree down as well. This is also true for rocks. If players want to harvest from rocks, stick with the stone ax. An iron ax will break the stone.