In Animal Crossing: Wild World (DS) and City Folk (Wii), the game clock syncs 1:1 with the system clock. You change the game time by changing the console clock.
| Action | Consequence |
|---|---|
| Forward Time (Days/Weeks) | Weeds spawn (3/day), Flowers wilt/die, Cockroaches in house, Villagers may move out (neglect), Turnips rot (Sunday buy → next Sunday 0 bells), Nook's upgrades reset? (No, but timer resets). |
| Backward Time (Any amount) | Turnips rot instantly. "Time Travel" flag set → Joan warns. Some events lock (Fireworks, Fishing Tourney require real date). |
| Large Jumps (Months/Years) | Mass villager move-outs, town overrun by weeds, save corruption risk (rare but reported). |
Wild World Specific: No ordinances. TT is raw. Backup via Slot-2 flashcart (R4 + NDS Backup Tool) or Wi-Fi Connection (Nintendo WFC backup — dead).