Core Defense

The core is a sphere of pure energy and you are its guardian. Slimes close in from every side — draw lines with your finger to block them, and grow the core's powers before they overwhelm you.

⚔️ Your hero fights
Pick a hero: the Guardian trusts armour and endurance, the Stormcaller starts with a free lightning strike. Your hero melees enemies that enter the circle and shoots at range once you develop the Arsenal branch.

✏️ Lines cost ink
Every line drains ink that refills over time, and fades after a few seconds. You cannot wall the core in a circle — a no-draw zone surrounds it. You have to choose where the barrier matters most.

🌳 Core skill tree — 5 branches, 5 levels each
Spark (lightning), Wave (knockback), Armor (thorns, shield, regeneration), Arsenal (hero shots), Spikes (traps around the core). Each branch offers an extra talent choice, so there are plenty of builds to try.

👹 24 enemy types, 3 mini-bosses and 8 bosses
Ice slimes, bats that fly over your lines, phantoms that phase through ordinary ones, living bombs, diggers that burrow underground, undead that rise again, lava enemies that burn barriers away. Each one needs a different answer.

❄️🔥 Powers on demand
Freeze stops every enemy on screen. Fury charges with kills and grants free ink for a few seconds.

📅 Daily challenge
The same wave layout for every player each day — one day, one board.

🏆 Leaderboard and achievements
Beat your own record, climb the global ranking, earn 13 achievements and unlock core skins with them.

🎁 Daily reward
Come back each day for crystals — the longer your streak, the bigger the reward.

✅ No forced ads, no in-app purchases
No banners and nothing that interrupts a run. Only optional rewarded ads: you watch when you want extra crystals or a second chance at a dying core. The game also works offline.

Simple to learn, deep to master. How long can you defend the core?