Upside Down vs Epic Idle War
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Upside Down
Embark on an action-packed adventure into a shadowy dimension to rescue a kidnapped friend. Explore mysterious landscapes, battle terrifying creatures with thrilling gunplay, and upgrade your gear to overcome challenges and uncover secrets.
- Explore a mysterious world
- Engaging storyline
- Dynamic combat with gunplay
- Resource management and rebuilding
- Upgrade and merge equipment
- Strategic battles against challenging enemies
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Journey into a gripping tale of mystery and danger, where a strange gate to a shadowy dimension has disrupted the peaceful life of a small town. When Amy is kidnapped by horrifying creatures, it’s up to Dustin to venture into the unknown, uncover the secrets of the Upside Down world, and bring her back. Inspired by the unsettling charm of dark and mysterious adventures, this game offers a perfect blend of exploration, action, and strategy. Equip Dustin with powerful tools and weapons, break through obstacles, repair the broken map, and fight off enemies with thrilling gunplay. Merge and upgrade your gear to take on greater challenges as you dive deeper into the story. Features: Explore a Mysterious World: Uncover hidden secrets and eerie landscapes. Engaging Storyline: Follow a compelling mystery filled with suspense and danger. Dynamic Combat: Use your gun to fight terrifying creatures and clear your way to the gate. Resource Management: Break objects to gather resources and rebuild the world. Upgrade and Merge Equipment: Strengthen your tools and weapons to face tougher challenges. Challenging Enemies: Face creatures of the Upside Down in strategic battles. Are you ready to fight through the unknown and bring Amy home? The adventure awaits!
Epic Idle War
Engage in arcade-style shooting with strategic bag management and merge mechanics. Upgrade weapons and tanks to battle through war zones and defeat bosses. Enjoy idle progression and offline rewards.
- Idle army progression
- Strategic bag management
- Merge guns and gear
- Personalized garage upgrades
- Real-time PvE battles
- Offline rewards
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Build your army. Fill your bag. Blast through the war zone! Epic Idle War: Backpack Master is the shooting game that has it all — run-and-gun arcade chaos, deep bag management strategy, satisfying merge mechanics, and explosive tank battles wrapped in nonstop war action. HIGHLIGHT FEATURES ► Idle progression + epic army growth ► Strategic bag management — every weapon slot matters ► Merge guns, tanks & gear for legendary upgrades ► Equip, shop & upgrade in your personalized garage ► Real-time PvE battles with explosive shooting effects Fill your bag with powerful weapons, merge stronger gear, and create the ultimate combat loadout. From devastating machine gun builds to epic tank attacks — this is where strategy meets shooting action. ◆ ENTER THE WAR ZONE Lead your hero into intense battles, face enemy defense lines, and take down giant bosses. Each war zone is a new challenge — earn your place in the hall of champions. ◆ MERGE GAMES MAGIC Arrange weapons in your bag, merge identical gear, and unlock legendary-tier firepower. The merge system rewards strategic thinking, and the payoff is pure epic satisfaction. ◆ EPIC TANK BATTLES Deploy powerful tanks, blast enemy formations, and dominate every war zone with overwhelming force. ◆ IDLE WAR REWARDS, NONSTOP PROGRESS Earn rewards offline and grow your army even while you sleep. Built for fans of idle war games — wake up to a stronger squad every time. ◆ RETRO ARCADE SHOOTING VIBES Classic war game energy meets explosive mobile shooting action. Nonstop, addictive, and impossible to put down. Whether you love shooting games, merge games, tank games, or epic idle war action — this is the war game for you. Download Epic Idle War: Backpack Master now and become the ultimate battlefield commander!
Screenshots
Verdict
The clearest difference is rating: Epic Idle War at 5.0 against Upside Down's 4.6. Epic Idle War also leads on update cadence (every 2 weeks vs every 6 weeks) and review sentiment (53% vs 36%). Upside Down's advantage is monetization model (ad-supported vs free with in-app purchases). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Upside Down sells 10 one-off in-app purchases and Epic Idle War sells 16 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Epic Idle War holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 589 and 2.3K respectively. Written reviews point the same way: 36% of Upside Down's written reviews are positive against 53% of Epic Idle War's.
Upside Down ships an update every 6 weeks, Epic Idle War every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Upside Down | Epic Idle War |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (589 ratings) | 5.0 (2.3K ratings) — better |
| Positive reviews | 35.7% of reviews | 52.5% of reviews — better |
| Number of ratings | 589 | 2.3K — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 849 MB | 396 MB |
| Age rating | 4+ | 12+ |
| Developer | Supercent Inc. | Tekifun LTD |
Customer experience
Upside Down
Epic Idle War
In-app purchases
Upside Down
- starterbundle_0.99$0.99
- handfulgems_0.99$0.99
- bunchgems_4.99$4.99
Show 7 moreShow fewer
- cpboffer1_9.99$9.99
- pilegems_9.99$9.99
- noads_13.99$13.99
- cpboffer2_19.99$19.99
- pouchgems_19.99$19.99
- vaultgems_49.99$49.99
- treasureboxgems_99.99$99.99
Epic Idle War
- Small Pack$0.99
- Newbie pack$0.99
- Entry Pack$0.99
Show 13 moreShow fewer
- Railgun Bundle 2$1.99
- RailGun Unlock$4.99
- Sentinel Pack$4.99
- Monthly card$4.99
- Medium Pack$4.99
- Crew pack$4.99
- Seasonal Pass$6.99
- Large Pack$9.99
- Tank pack$9.99
- Lifetime card$9.99
- Super Deal$9.99
- Lifetime card$14.99
- Value Pack$19.99









