Core Sentinel

One core. A growing swarm. A new build every run.

Core Sentinel is a portrait tower-defense game where your core fires automatically and your upgrade choices shape the battle. Balance damage, durability and income as enemy waves grow stronger.

BUILD DURING BATTLE
Spend the Cash earned in each run on attack, defense and utility. Strengthen your shots, recover health, improve your defenses or invest in the resources that fund your next upgrade. Compare the next level before buying, or use MAX to buy what you can afford.

RETURN STRONGER
Keep your earned Coins and invest in permanent Workshop upgrades between runs. Unlock new systems as you reach wave milestones. Start Lab projects that continue researching while the game is closed, then return with more ways to shape your defense.

CREATE YOUR LOADOUT
Collect 32 Cards with seven star levels. Equip modules across four slots, develop their affixes and combine them with bots, companion chips and permanent grid upgrades. Unlock nine superweapons, from Gravity Well to the rotating beams of Prism Array.

ADAPT TO THE ENEMY
Face fast attackers, durable tanks, ranged enemies, protective units, elites and bosses. Experiment with critical hits, recovery, shields, mines and other interacting mechanics. Unlock tougher tiers and optional run restrictions as your collection grows.

KEEP YOUR PROGRESS
Pause a defense and continue from its saved checkpoint. Progress and settings are stored locally on your device. Combat does not continue while the game is closed; Lab research does.

Internet connection required. The interface is in English. Optional rewarded ads provide the reward shown before you choose to watch. Automatic ads may appear between runs, after every second completed defense. Ad availability depends on the provider. No game account is required.

Recent changes:
Restored the familiar Cards page with Buy 1, Buy 10, draw odds and the full collection visible.
Buy card slot now appears below equipped cards with its current Gems cost.
Removed the Keys bar from the Cards page.