Castle Up!Stack heroes, break the boss: an idle castle defense
- Idle defense
- A boss every 15 waves
- Play-testing on Android
A boss blocks the road every 15 waves. Hit it with skills in its weakness order to stagger it. Recruit heroes and raise your castle to the clouds.
Try it · stagger the Bat Queen
See the real gameThe fight above is a web taste, with shorter skill cooldowns and less boss HP.
A real boss fight, 15 seconds, hands off
Wave 45 against the Bat Queen in the game in development, with skills left on Auto. Watch the Fire Arrows combo, then a Counter stagger mid-wind-up that drops her to the ground before she flies again. The screens beside it are straight from the game too.
15 seconds on Auto · no sound
A boss every 15 waves. Get the order right and it crumbles
Every boss shows a weakness order above its head. Skills fire on their own if you like, but aiming for the order yourself changes the fight.
Weakness order → stagger
Hit 2 to 4 elements in order and the boss is stunned for 4 seconds, taking 1.8× damage. A wrong element just passes with no penalty, and the button to press says ‘Next!’.
Parry · Counter
A wind-up ring turns gold for its last half second. Hit it then to parry (attack cancelled, 5-second stagger), or finish the order during the wind-up for a Counter: a longer, bigger stagger.
Flyers fall
Flying bosses crash down while staggered, so ground-only skills reach them. Then they take off again.
14 element combos
When two skills’ elements pair up within 5 seconds, the second one hits 1.5 to 2× harder with a bonus effect.
- ▶Shock (Ice → Lightning)
- ▶Shatter (Ice → Physical)
- ▶Overload (Fire → Lightning)
- ▶Fire Arrows (Physical → Fire)
See the other 10
- ▶Steam Blast (Ice → Fire)
- ▶Lightning Rod (Physical → Lightning)
- ▶Judgement (Lightning → Light)
- ▶Eclipse (Light → Dark)
- ▶Hellfire (Dark → Fire)
- ▶Purify (Dark → Light)
- ▶Quench (Fire → Ice)
- ▶Black Lightning (Lightning → Dark)
- ▶Shadow Strike (Dark → Physical)
- ▶Blessed Blade (Light → Physical)
20 bosses, 10 regions
Each region has 30 waves, with bosses on waves 15 and 30 and a mid-boss right before each. Beat a boss for the first time and a boss hero with its power joins your castle.
A hero on every floor, all the way to the clouds
Every promotion changes your castle and adds a floor. Flip through all 20 grades below.
Sun Palace
- 20 grades, from 3 floors to 22Each promotion adds a floor and multiplies all damage and castle HP by 1.25.
- 50 heroes30 you recruit, plus 20 boss heroes who join when you first beat their boss.
- Who stands whereThere are more heroes than floors, so you pick who stands. Every hero with a skill becomes a skill button.
- Up to 20 starsGet the same hero again to raise its ★: gold, then red, purple and rainbow stars.
ArcherCommon · Physical
SpearmanCommon · Physical
Frost WitchRare · Ice
AngelEpic · Light
Holy Sword KingLegendary · Light
Bat PrincessBoss hero · Dark
Little GolemBoss hero · Physical
Little Demon LordBoss hero · FireBorder: orange Legendary · purple Epic · red boss hero
Leave it on and the castle fights
Auto skills
Choose Manual, Auto, or Boss by hand. It starts on Auto.
Free auto replay
Cleared waves replay by themselves to gather gold. Only moving on to the next wave is your call.
Losing costs nothing
There is no penalty for losing. The gold you earned stays.
Expeditions keep going
Send up to three heroes for 1, 4 or 8 hours. Time passes even with the game closed, and the heroes never leave the castle.
Plenty to do
Boss Hall
Rematch bosses you have beaten across 15 levels. They wear a barrier, so staggers and parries are the key.
Endless Tower
One climb is one run. Every 3 floors you pick 1 of 3 blessings, and floor rules change every week.
Expedition
Send up to three heroes and collect their rewards later.
Numbers are for the current build and may change before launch.
No ads or payments yet
This is how it is designed for launch. In the current build, ads and purchases are test screens that cost nothing.
Free
- 2× speed
- Auto skills and auto replay
- Trying again after a loss (your gold stays)
Ads
- Designed as rewarded ads you choose to watch
- Revive, double expedition rewards, 3× speed for 30 minutes
If you pay
- Keep 3× speed
- Rewards without ads
- Gems
Recruiting heroes is a random draw. The odds are shown in the game and are still being tuned. Since the game is not out yet, these rules may change.
Questions
When and where can I get it?
A Google Play (Android) launch is in the works. The game is being play-tested on phones now, and there is no release date yet.
Will it be on iPhone?
Not decided yet. Android is what is being prepared now.
Do I have to spend money?
It is designed to be free to download. 2× speed, auto skills and auto replay are free. Ads and payments are not in yet; the planned rules are in the Cost section above.
Do I have to keep playing by hand?
No. Skills can fire on their own, and cleared waves can replay automatically. Expeditions keep going while the game is closed. Only moving to the next wave needs a tap.
Where is my progress saved?
In 10 save slots on your phone. There are no accounts or cloud saves for now.
Does it collect my data?
The current game sends nothing anywhere. If ads or payments are added at launch, we will publish a privacy policy on this site first, saying exactly what is collected.
Which languages?
Korean, English and Japanese.
Is it scary?
It is fantasy combat in a bold-outline cartoon style, with fantasy foes like a Bone Shaman and a Demon Lord. The age rating will be set at launch.
Play-testing on phones right now
A Google Play release is being prepared. There is no date yet; when it is out, the download link goes right here.
- ✓Build 10 regions, 20 bosses, 50 heroes
- 2Play-test on phones (now)
- 3Add ads and payments
- 4Closed testing
- 5Prepare the Google Play release
Made by Lumen Lab. Email contact@lumenlab.page