HyperCastle: Tower Defense

HyperCastle is a castle tower defense, rebuilt in 3D. A toy-like castle stands in the middle of the map: stone walls, four gates, corner towers and a keep. Monsters march in from all four corners, hammer at the walls and fall when your towers beat them.

Towers around the keep
- Four big tower slots stand around the keep, and the keep fights as a tower too. Build on them and upgrade with the coins every kill brings
- Evolve a tower and it changes shape: 40 forms in eight families, Archer, Crossbow, Ballista, Cannon, Tesla, Laser, Missile and Plasma

Your hero
A hero knight fights outside the walls. He runs to the nearest threat, cuts it down and casts a frost nova every two seconds that hurts and slows every monster around him. Tap the ground to send him where he is needed.

Four elements
Tap a tower to upgrade or evolve it, or to give it an element. Each element goes up to level 3:
- Fire: burns the monsters it hits
- Ice: slows them, and every hit bursts into frost that chills and splashes the monsters around it
- Electro: the hit jumps on to monsters nearby
- Holy: more damage, and a kill can heal the castle
Switching to another element keeps its level, and when the sky changes, one tap moves your strongest tower to the element it favours.

Weather
The sky changes every few waves, and each sky favours some elements over others: a heatwave helps Fire, rain helps Electro, snow helps Ice and slows every monster, fog helps Holy. A storm helps Electro too and throws lightning at the monsters. The first waves are always clear.

Hold the walls
- Upgrade a wall section: each level blocks one more point of damage from every hit
- When a wall section comes under heavy attack, a shield appears over it: tap it to reinforce that section for 15 seconds
- Repair the castle with the points your kills earn

Who comes over the hill
Skeletons, orcs, knights, mages, ghosts, demons and dragons, twenty kinds from scouts to titans. Some storm the walls, some throw fire and magic from range, and every wave is bigger than the last.

My Castle
Every run earns castle XP, won or lost. Each castle level, up to 30, gives you a point for five upgrades:
- Ramparts: more castle HP
- Masonry: walls start a level higher
- Treasury: more coins at the start
- Engineers: towers fire faster
- Quartermaster: boosters arrive sooner
Your castle stands in 3D on the My Castle screen and grows through four eras as it levels up: Wooden Fort, Stone Keep, Castle and Citadel, and every upgrade adds its own walls, towers, yard, workshop or camp. The castle you defend in battle shows them too. The monsters grow with your castle, so a stronger castle makes a harder siege, not a solved one. Points can be reset for free at any time.

Boosters from the castle
Every few waves the castle hands you a booster. Nothing to buy:
- Repair Kit: the castle back to full HP
- Iron Ward: a third less damage for one minute

The Siege
One mode, 100 waves, and every tenth wave a boss with its own health bar marches behind the horde; holding that wave adds castle XP. Hold wave 100 to climb the ladder: five sieges, Copper, Bronze, Silver, Gold and Diamond, each with tougher monsters and more coins and XP. The run is saved between waves, so you can continue it later from the start screen.

What is free, what you pay for
The first 20 waves are free to play, with My Castle, boosters and the leaderboard. Hold wave 20 and a free run ends as a win. One purchase unlocks the rest of the siege, waves 21 to 100, and the same run carries on. No ads and nothing else to buy. The purchase stays on your Google account.

Also
- Plays offline, no Wi-Fi needed
- Google Play Games achievements, cloud save and a leaderboard
- Prefer the classic flat map? It is one switch away in Settings

Built by Hyper Hollow Games.