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MERGEKIN Sarper Studios

MERGEKIN: Echo Defense

Place heroes. Merge them stronger. Hold the road.

A casual merge and tower-defense strategy game for Android. Sixteen hand-built battlefields, six heroes, three runes, and a crystal gate that must not break.

Coming soon to Google Play In development

The six heroes at tier III: Aren in royal blue with a greatsword, Lumi in forest green with a bow, Vela in violet with a crescent staff, Ket in rust orange with trap gear, Neris in teal with a trident and halo, and Sarper in crimson with a shell launcher.

How it plays

Place, merge, choose a rune, defend.

  1. Place

    Between waves, tap a hero card, then an empty plinth beside the road. Every hero costs 25 gold. Move or sell them until the wave starts.

  2. Merge

    Two heroes of the same kind and tier become one stronger hero: I + I makes II, II + II makes III. It works mid-fight too, and frees a plinth.

    I
    II
    III
    Aren at tier I, II and III.

  3. Choose a rune

    When two I merge into a II, pick the rune that reshapes the hero's power.

    • Ember Hits harder, most of all on foes that are already hurt.
    • Frost Slows what it hits, and freezes what is already chilled.
    • Storm Carries the strike on to more foes nearby.

  4. Defend

    Start the wave when you are ready, at 1×, 2× or 3×. Shades follow the road to the gate. Every shade that falls drops 1 gold, and clearing the wave pays its reward. Let none through for a Perfect.

Pale Lantern, wave 1: three Arens and Vela hold plinths along a looping marsh road while the first shade comes out of the portal towards the crystal gate.
Pale Lantern, wave 1 of 12, the first shade on the road.

Heroes

Six heroes, one road.

Each hero has one job. Where you put them matters as much as how strong they are.

  • Aren

    Cleave · Royal blue

    Swings at up to three foes at once. Best on the bends, at the road's edge.

  • Lumi

    Range · Forest green

    Shoots one foe from afar. Her reach covers most of the road.

  • Vela

    Area · Violet

    Blasts the thickest crowd. Slow, but wide.

  • Ket

    Trap · Rust orange

    Sets a trap on a road spot you pick. The first foe to step on it takes a heavy hit.

  • Neris

    Support · Teal

    Links to one or two heroes nearby and makes them attack faster.

  • Sarper

    Ballistic · Crimson

    Lobs shells at far crowds. Up close, he has a blind spot.

Battlefields

Sixteen maps across four regions.

Every map is hand-built around its own road, and every map runs twelve waves. Each region opens gently and ends with a keeper wave.

  1. Region 1

    Gate Forest

    The first line behind the mist.

    • Misty Pass
    • Stream Mouth
    • Old Causeway
    • Wolf Ridge

    Keeper: Pack Caller

  2. Region 2

    Pale Marsh

    Rotting water, drowning roads.

    • Dead Lake
    • Reed Strait
    • Twin Cut
    • Pale Lantern

    Keeper: Lantern Echo

  3. Region 3

    Ash Forge

    Furnaces that never cool, gates of iron.

    • Twin Bellows
    • Cinder Stair
    • Iron Bridge
    • Furnace Heart

    Keeper: Hearth Colossus

  4. Region 4

    Echo Spire

    The source of the echo.

    • Echo Ramp
    • Overflowing Spring
    • Twin Terraces
    • Tower Summit

    Keeper: Tower Echo

From the game

  • Stream Mouth: a winding road around a lake in a green valley, heroes on stone plinths beside it.
    Stream Mouth · Gate Forest
  • Dead Lake: the road circles a still marsh lake while shades walk towards the crystal gate.
    Dead Lake · Pale Marsh
  • Cinder Stair: a looping road over scorched ground below volcanoes, heroes holding the bends.
    Cinder Stair · Ash Forge
  • Twin Terraces: two road terraces under a violet sky with floating spires, archers on the plinths.
    Twin Terraces · Echo Spire

Captured on an Android test phone, with the game set to Turkish.

At a glance

Easy to start, room to get clever.

The first maps teach one idea at a time. Difficulty rises within each region, and every new region opens with room to breathe.

Battlefields
16 hand-built maps
Regions
4, each closed by a keeper
Waves
12 per map
Heroes
6, tiers I to III
Runes
Ember, Frost, Storm
Play
Single-player, works offline
Account
None
Platform
Android

Privacy

No account. Your progress stays on your phone.

The game does not ask for your name, email, location, camera, microphone or photos. Ads are optional and rewarded: you choose when to watch one. The privacy policy lists exactly what leaves the device and who receives it.

Read the privacy policy Gizlilik politikası (Türkçe)

Developer

Made by Sarper Studios.

An independent studio in Türkiye. For support, privacy questions and press, write to us.

sarperstudiosapp@gmail.com

All Sarper Studios apps