Reactor: Core Siege icon

Hold the core one more wave.

Merge turrets into a ring of light. A merge tower-defense roguelite — offline, no account.

Free to playOffline, no accountNo loot boxesPurchase-proof Daily
A full turret ring firing on the wave

The loop

Merge into a ring of light

Two turrets become a stronger one. Build the ring, route the power, hold the core.

Mid-wave combat around the core

The Daily Descent

One fixed run a day, same for everyone, with a locked loadout no purchase can touch.

The Daily Descent — same run for everyone

Short runs, permanent progress

A run fits in a coffee break. Every death feeds a permanent upgrade tree, so the next run starts stronger.

Permanent upgrade tree between runs

Offline, yours

No account, no connection required, no energy meters. Open the app, defend the core.

Turret collection

Honest pricing

Free to play — every turret, wave and the Daily are earnable in the game. Optional extras: a $0.99 Starter Pack, a $4.99 Spark Pack, and $3.99 Ad-Free Forever, which removes ads permanently. No subscription, no loot boxes — and the Daily's locked loadout keeps it purchase-proof.

FAQ

Is it pay-to-win?

Purchases can save grinding time in the main mode, but the Daily Descent locks everyone to the same loadout — money can't touch it.

Does it need an internet connection?

No. The game runs fully offline with no account. See the Privacy Policy.

What about ads?

Ads are optional and rewarded-style; Ad-Free Forever is a one-time $3.99 purchase that removes them permanently.

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