简易花园守卫

阳光仅能通过左侧答题获得（无向日葵、无天然掉落）。起始阳光随关卡（如 1-1 为 150，多数白天关 50；换关、自动下一关会保留当前阳光；左侧「新游戏」确认后整页回到 1-1 并 resetSun=1 重置阳光；种子栏再玩一次仅重开本关守卫、保留阳光）。种子栏随关卡显示植物（无跨关解锁）；1-1～1-4 与 1-10 传送带 含铲子（点铲子再点草坪可移除植物，不返还种植消耗的阳光）。樱桃炸弹为全屏秒杀；土豆雷种植后约 15s 武装，僵尸踩格小范围引爆；寒冰豌豆命中可减速；双发每轮两豆。僵尸含旗帜（移速较快）、路障、撑杆、铁桶等。波次出怪，通关后自动下一关。游戏难度与速度连乘为有效节奏。游戏时间默认 30 分钟（可点选 15 / 30 / 60 分），到点暂停种植与发射，须点游戏时间切换时长或浮层「继续玩」重置计时。可用 ?level=1-1 选关。In the 2D garden, sun comes only from quizzes, with no Sunflowers or natural drops. Starting sun depends on the level (150 in 1-1, usually 50 in daytime levels). Changing levels preserves sun. New game resets the page to 1-1 and its starting sun; Play again restarts only the current battle and preserves sun. Seed cards depend on the level. Levels 1-1 to 1-4 and conveyor level 1-10 include a shovel, which removes plants without a refund. Cherry Bomb clears the screen; Potato Mine arms after about 15 seconds and explodes locally when stepped on. Snow Pea slows enemies; Repeater shoots twice. Zombies include Flag, Conehead, Pole Vaulting and Buckethead. Finishing the waves advances to the next level. Difficulty and speed multiply together. Play time defaults to 30 minutes, with 15, 30 and 60 minute options. At the limit, planting and firing pause. Change Play time or select Keep playing to reset the timer. The level can also be selected with ?level=1-1.

1-5 坚果保龄球：开局 0 阳光；点左侧行槽发射传送带坚果，每次发射扣 10☀，不足不发射；僵尸含普通、旗帜、路障。Level 1-5 Wall-nut Bowling: starts with 0 sun. Click a row on the left to launch a conveyor Wall-nut. Each launch costs 10 sun and requires enough sun. Enemies include regular, Flag and Conehead Zombies.

1-10 传送带：按循环出现豌豆、坚果、樱桃、土豆、寒冰、双发等，每次种植固定扣 10☀（与卡面原价无关），阳光不足无法放置；开局 0 阳光，须左侧答题补足；含铲子可铲除已种植物（不返还阳光）。Level 1-10 Conveyor: cycles Peashooter, Wall-nut, Cherry Bomb, Potato Mine, Snow Pea and Repeater. Each planting costs 10 sun regardless of the card price. Starts with 0 sun; earn more from quizzes. The shovel removes plants without a refund.