Castle Watch
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Goblins are marching toward your castle. You line the road with towers and try to stop them on the way. Castle Watch is a tower defense game: it rewards planning, not reflexes. You get time to think before every wave, then watch whether your layout actually holds.
1. Pick a map and a difficulty
Three maps: Green Pass is the gentlest, Snake Creek is long and winding, Narrow Gorge is hardest because its road is short. Choose Easy, Normal or Hard — Easy starts you with 22 lives and 190 gold.
2. Tap empty grass to build a tower
You can build on any tile that is not road, tree or castle. Tapping shows the range circle, so you can see how much of the road that tower covers.
3. Use both tower types together
The Archer Tower (blue) fires fast at a single target and is cheap. The Bomb Tower (purple) is slow but damages every goblin near the blast. Bombs shine in crowds, archers against single tough enemies.
4. Start the wave and watch
Press START and goblins come in from the left. Every goblin that reaches the castle costs you a life. You can switch to 2x speed any time.
5. Spend your gold on upgrades
Every goblin drops gold and every cleared wave pays a bonus. Tap a tower to upgrade it — there are three levels. Build wider or upgrade deeper is the real decision in this game.
6. Finish 15 waves, then go endless
The campaign is 15 waves. Clear it and Endless Mode unlocks: waves keep getting stronger and your best wave is saved per map and difficulty.
What to expect at this age
A 7-8 year old usually builds one tower type and lines them all up next to each other — that is enough on Easy. Around 9-10 the idea that "a tower near a corner keeps enemies in range longer" clicks. By 11-12 the choice between building more towers and upgrading existing ones becomes deliberate. The game never forces this: Easy can be finished with no plan at all, but on Normal a player who only builds archers stalls around wave 13 and has to discover the bomb tower.
At home and in class
The game suits taking turns: one child builds, another starts the wave, and you watch what happens together. Asking "how many goblins got through, and where did they leak?" after a wave pushes the child to actually read the map. Endless mode creates natural competition too — who gets further on the same map and difficulty?
Tips
- Build near corners — enemies stay in range longer there.
- A few maxed towers usually beat a tower on every tile.
- Bomb towers are weak alone; pair them with archers.
- Selling refunds 60% of what you spent, so moving a badly placed tower is cheap.
- There is no timer between waves — take your time.
❓ Frequently Asked Questions
Is Castle Watch free?
Yes. Completely free, ad-free and no sign-up. It runs in the browser with nothing to install.
What age is it for?
Designed for ages 7-12. On Easy there are few reading-heavy decisions, so a 6 year old can play with help. Hard mode will challenge adults too.
Does it work on phones?
Yes, it is built for touch — everything is done by tapping. Just turn the phone sideways; the game tells you when to.
How long is a game?
A 15-wave campaign takes about 15-18 minutes. The in-game 2x speed button halves that. Endless mode lasts as long as you survive.
Is progress saved?
Your best wave for each map and difficulty is stored in your browser and shown in the menu. Games in progress are not saved; each run starts fresh.
Can Hard mode actually be beaten?
Yes, but barely. In our testing even the easiest map finishes with only 2 of 22 lives left, and it is close to impossible without combining both tower types.