# Pulse Defense: Lucky Merge TD > Random merge tower defense: draw units, form poker-hand combos & outlast the AI Canonical page: [https://chrome-stats.com/d/com.opentrop.defense](https://chrome-stats.com/d/com.opentrop.defense) ## Overview - **ID:** `com.opentrop.defense` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** opentrop labs - **Category:** GAME\_STRATEGY - **Downloads:** 24 - **Version:** 1.0.0 - **Last updated:** 2026-08-03 - **First published:** 2026-07-08 - **Publisher country:** KR - **Size:** 97 MB - **Data as of:** 2026-09-13 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.opentrop.defense) - **Website:** [https://www.opentrop.com](https://www.opentrop.com/) - **Privacy policy:** [https://www.opentrop.com/privacy](https://www.opentrop.com/privacy) ## Description Pulse Defense is a luck-based merge tower defense game with a twist: your units are also poker cards. Draw random units, merge matching pairs to level them up, and line up poker hands — Pair, Straight, Full House, Five of a Kind — to supercharge an entire row. Hold your lane against endless waves while sending mobs at an AI rival in a 1v1 duel. Every run is a fresh roll of the dice, but placement and timing decide who survives.

■ MADE FOR YOU IF…
• You love random defense and merge TD games where the next draw can change everything
• You want quick, one-handed strategy rounds, not a 40-minute campaign
• You love building combos — scoring a poker hand here feels as good as in any roguelike card game
• You want an offline single-player game with no account and no pay-to-win

■ HOW TO PLAY
1. DRAW — Spend gold to summon a random unit from five rarities: Common, Rare, Epic, Legend and Primordial (a 1% drop).
2. MERGE — Combine two units of the same rarity and level to level up, all the way to Lv.6.
3. BUILD HANDS — Each build row holds 5 units. Level is the rank, rarity is the suit. Complete a poker hand and the whole row gets stronger.
4. DEFEND — Units fire automatically as waves climb and mobs toughen. Before each boss the clock stops for an 8-second prep window to re-plan your board.
5. SEND MOBS — Spend gold to push mobs onto your rival's lane. Break their base first to win, then keep going in Survival mode to pile up score.

■ POKER HANDS — STRATEGY ONLY THIS TD HAS
One row = one hand. Duplicates count once, so merging is always the smart move.
• Pair, Two Pair, Three of a Kind, Full House, Four of a Kind, Straight, Straight Flush, Five of a Kind
• Higher hands scale row damage up to ×9 and attack speed up to ×2
• Hands lay lane effects — spark, mud and fire zones that slow and burn every mob passing by
• Four of a Kind and above unlock execution volleys with bonus boss damage
Where you place each unit matters as much as what you draw. Same luck, different results.

■ LV.6 SPECIAL SKILLS & BASE STRIKE
Max-level units unlock a rarity-specific ultimate:
• Rail Lightning — a bolt races down the rail, zapping everything on it
• Tidal Wave — a wave rolls along the path, hitting and slowing all
• Map Meteor — a heavy hit on every living enemy
• Push Back — a shockwave knocks every mob back to the start
• Freeze Wipe — freezes the entire map, wipes it, and pays out a gold jackpot
Your base fights too: it charges up and unloads a burst that chains through the front line. Upgrade it with gold for extra shots.

■ GAME MODES
• BOT DUEL — Four difficulties: Easy, Normal, Hard, Extreme. Harder settings multiply your score. Plays fully offline.
• DAILY CHALLENGE — A new seed every midnight; everyone gets the same draws, so it's pure skill. 3 attempts a day, difficulty rotates by weekday, Sunday is Extreme.
• STREAKS — Finish a daily run to keep your streak alive, with milestones at 3, 7, 14, 30 and 100 days. Optional evening reminder when it's about to break.
• GLOBAL LEADERBOARDS — Weekly, monthly and all-time Hall of Fame top 10. No account, just a nickname.
• BRAIN ACTIVATION — Every finished run turns score into XP that evolves your brain avatar from Neuron Seed to Transcendent Mind. A fun progression meter.

■ WHY YOU'LL KEEP PLAYING
• One minute to learn, endless depth: luck gets you started, strategy takes you further
• Portrait, one-handed play. Runs are short and intense, with a new difficulty wall every 10 minutes
• No in-app purchases — draws, merges and hands are all you need
• Your first run each day starts without an ad; watching a rewarded ad adds +100 starting gold
• Neon visuals with beam, meteor and freeze effects, plus haptic feedback
• No login or sign-up. Plays offline (leaderboards and ads need a connection)

Random defense meets merge strategy, with poker hands on top. How far can your luck — and your brain — take you today? Download Pulse Defense and find out.

Support: siulabs.dev@gmail.com ## Rankings - #2,537,563 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.INTERNET` - `android.permission.MODIFY_AUDIO_SETTINGS` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.opentrop.defense.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [Monster Defense：Random Clash](https://chrome-stats.com/d/com.yunbu.monsterdefense.free) — 75,293 users - [DIOfense: Tower Defense Rush](https://chrome-stats.com/d/com.TikitakaStudio.DOffence) — 757 users, 3.83 / 5 - [Front Defense: Merge Rogue TD](https://chrome-stats.com/d/com.shane.roguedefense) — 453 users - [Random Evol Defense : Merge TD](https://chrome-stats.com/d/com.Tvelop.randevodef) — 4,074 users, 3.78 / 5 - [RTD : Random Tower Defense](https://chrome-stats.com/d/com.RudenSmith.RTD) — 173 users - [Galaxy Defense : Coop TD](https://chrome-stats.com/d/com.TeamSparta.StarTD) — 258,578 users, 3.83 / 5 - [Merge Legion: Defend Realm](https://chrome-stats.com/d/com.allstarunion.mergelegion) — 2,639 users - [Random Rush - Tower Defense TD](https://chrome-stats.com/d/com.daladev.randomrush.towerdefense.td) — 4,298 users, 2.64 / 5 - [Lucky Defense](https://chrome-stats.com/d/com.percent.aos.luckydefense) — 5,897,533 users, 4.32 / 5 - [MythBit Rush](https://chrome-stats.com/d/com.dtdweiguang.gp) — 950 users - [Survival Random Defense - TD](https://chrome-stats.com/d/com.dreamplay.survivalrandomdefense.google) — 43,374 users, 3.05 / 5 - [Planet Battle : Tower Defense](https://chrome-stats.com/d/com.levelseven.planetbattletd) — 2,622 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.opentrop.defense)