# Virus Killer-Tower Defense — Merge! PVP! Online Battle > Strategic tower defense game with potion merging and PvP/co-op modes. (iPhone/iPad app by ITHINK STUDIO LIMITED.) - Source: https://appshunter.io/ios/app/virus-killer-tower-defense/id1538522501 (this page in markdown: same URL + `.md`) - Developer: [ITHINK STUDIO LIMITED](https://appshunter.io/developer/1532860834) - Category: Games, Social Networking, Card, Strategy - Price: Free with in-app purchases - Rating: 2.44/5 from 9 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 210 MB - Languages: English - Released: 2020-11-16 - Data updated: 2026-06-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/virus-killer-tower-defense/id1538522501/reviews.md ## What is Virus Killer? This is a unique mix of high strategy and tower defense game. Features: 1.Upgrade your potion Merge the same type of potion with the same number, your potion will raise a level. But remember! Potion types change randomly when you merge them! 2. PvP Mode Apply various strategies according to enemy's map. Mix and match various potion and create your best powerful PvP map. The longer you defend, the more difficult it will be for your enemy. 3. Alliance Mode In the Alliance Mode, you cooperate with another player to defend against the enemy. You will get new potion by playing the Alliance Mode. 
4.Simple and engaging game-play Play the game anywhere and anytime. Get the most fun out of your breaks! Join us now! ## Key features - Merge potions to upgrade levels - Random potion type changes upon merging - PvP mode with strategic map defense - Alliance mode for cooperative play - Simple and engaging gameplay - Playable anywhere, anytime ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 80 Diamonds | $1.99 | one-time | | 500 Diamonds | $4.99 | one-time | | 1200 Diamonds | $9.99 | one-time | | 2500 Diamonds | $19.99 | one-time | | 6500 Diamonds | $49.99 | one-time | | Vip | $19.99 | one-time | | 14000 Diamonds | $99.99 | one-time | ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/virus-killer-tower-defense/id1538522501/reviews.md ### 5/5 — This game is hard if your next thing you get is assault 2 *2024-12-27, version 1.0.7* But I like this game, the best tower defence game ever found right now ### 2/5 — Great but.. *2024-06-19* Matchmaking is trash or the bots y’all use are too OP. I should not have more cards on the table with more stars than my opponent and lose multiple times in a role. Typical cash grab gimmick. ### 1/5 — Bug *2021-08-07* Loading screen stuck at 70% again. Please fix this bug. ### 1/5 — Bug *2021-07-04* Game is stuck at 70%, developers abandoned the game. ### 5/5 — Lovely *2021-05-20, version 1.0.6* Good game i love it keep it updated ### 1/5 — App Doesn’t work waste of time! *2021-04-16* When I go to open the game it loads to 70% then stays stuck on 70% and the game doesn’t load! Wish I could give zero stars rating for this dumb app ## Frequently asked questions about Virus Killer ### What is Virus Killer-Tower Defense? Virus Killer-Tower Defense is a strategy game that combines tower defense mechanics with potion merging. Players upgrade potions, battle opponents in PvP, or cooperate with allies in Alliance Mode. ### How do I upgrade potions in Virus Killer-Tower Defense? You upgrade potions by merging two of the same type with the same number. Merging can also randomly change the potion type, adding an element of surprise to your strategy. ### Can I play Virus Killer-Tower Defense offline? The description highlights simple and engaging gameplay that can be played anywhere and anytime, suggesting it is designed for on-the-go play, but does not explicitly confirm offline functionality. ### Does Virus Killer-Tower Defense have ads? Yes, Virus Killer-Tower Defense contains advertisements. ### What is the age rating for Virus Killer-Tower Defense? Virus Killer-Tower Defense has an age rating of 4+. ### How often is Virus Killer-Tower Defense updated? The latest version is 1.0.7, and the app was last updated on December 18, 2021. Further update frequency information is not available. ### What devices support Virus Killer-Tower Defense? Virus Killer-Tower Defense is supported on iPhone and iPod devices. ### What is the player sentiment for Virus Killer-Tower Defense? The app has a rating of 2.4 stars from 9 ratings, indicating a mixed to negative user sentiment based on the limited available data. ## Version history (last 5 releases) ### 1.0.7 — 2021-12-18 Fix some bugs ### 1.0.6 — 2020-12-21 Fixed some bugs. ### 1.0.5 — 2020-12-12 Bug fixes. ### 1.0.4 — 2020-12-08 New Potions added. New feature : Task. Fix some bugs. ### 1.0.2 — 2020-12-02 New Feature: Co-op mode ## Apps similar to Virus Killer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Rumble Rivals: Tower Defense](https://appshunter.io/ios/app/rumble-rivals-tower-defense/id1599244551) | 4.6 (1,184) | Free | Games | | [The Tower - Idle Tower Defense](https://appshunter.io/ios/app/the-tower-idle-tower-defense/id1575590830) | 4.2 (19,041) | Free | Games | | [Crazy Defense Heroes: RPG TD](https://appshunter.io/ios/app/crazy-defense-heroes-rpg-td/id1300027167) | 4.8 (8,069) | Free | Games | | [LUDUS・Strategy Card PvP Battle](https://appshunter.io/ios/app/ludusstrategy-card-pvp-battle/id6446642912) | 4.7 (318) | Free | Games | | [Crazy Kings Tower Defense Game](https://appshunter.io/ios/app/crazy-kings-tower-defense-game/id924907196) | 4.7 (1,799) | Free | Games | | [Rush Royale: Tower Defense RPG](https://appshunter.io/ios/app/rush-royale-tower-defense-rpg/id1526121033) | 4.5 (94,223) | Free | Games | ## More apps by ITHINK STUDIO LIMITED - [Gangster Clash](https://appshunter.io/ios/app/gangster-clash/id1537353242) - [Blast Mining](https://appshunter.io/ios/app/blast-mining/id1538692475) - [Go！Detective](https://appshunter.io/ios/app/godetective/id1547406178) - [Snowball Roller](https://appshunter.io/ios/app/snowball-roller/id1547757253) - [Hit Me! 3D](https://appshunter.io/ios/app/hit-me-3d/id1550015696) All apps by ITHINK STUDIO LIMITED: https://appshunter.io/developer/1532860834 ## Related topics [ithink studio limited](https://appshunter.io/ios/topics/ithink-studio-limited) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*