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Grounded
6/10

Door Barr

Swipe to barricade the side of your shelter that zombies are about to breach.

Core mechanic

Zombies approach from left/right/door each wave; swipe to nail planks on the correct side before they break through, combo bonuses for clean barricades.

Controls

Swipe left or right with one thumb to board up whichever side is being attacked.

Theme

Zombie apocalypse survival — focus on the 'fortify your shelter' pillar from Dark War:Survival.

Why now

The shelter-build-and-defend fantasy is the headline pitch of a #2 free app — a tight barricade-swipe loop packages that fantasy into a single mechanic.

Signals · overall 6/10
Hook
7/10

Zombie shelter/barricade defense is a proven headline hook (Last War, Dark War, Whiteout Survival all top-grossing), and the 'swipe to nail planks' framing adds a tactile, instantly-readable visual gag that reads in a 3-second clip.Dark War Survival case study showing the shelter-build-and-defend fantasy breaking into US iOS top grossing #37 in Nov 2024.

Virality
6/10

Zombie content is a perennial TikTok/Shorts performer and the swipe-fail format (miss a side, zombie bursts through) is exactly the kind of single-frame clip that drives shares; comparable swipe-defense apps already exist as a category.232+ zombie defense apps listed, confirming the genre has massive clip-able presence but also crowding.'Swipe Defense' exists as a direct mechanic cousin, showing the format is already proven shareable.

Simplicity
8/10

One-thumb swipe, three attack vectors, plain visual feedback (planks nailed, zombie splat). Trivial prototype scope, well within standard hypercasual build cycle.

Monetization
7/10

Standard hypercasual ad stack fits cleanly: interstitials between waves, rewarded video for revive/continue or 2x combo bonus. Zombie genre consistently monetizes at the top of the charts, validating ARPDAU upside.Sensor Tower Q2 2024 analysis confirming zombie games as a top-performing revenue category on mobile.

Whitespace
3/10

Crowded: a literally-named 'Swipe Zombie' already lives on the App Store, plus 'They Are Coming Zombie Defense', 'Swipe Defense', and 232+ tagged zombie defense apps. Pure-barricade niche is narrow and likely contested.'Swipe Zombie' already on App Store — near-exact mechanic overlap.211+ zombie defense apps on iOS alone, signaling a saturated shelf.

Dark War:Survival · #20 top free · GB · Omnilojo Pte LtdApp Store · 2026-07-26 (1d ago)