Go Narrow: Antibiotics Game

Bacteria, finally covered

Only for iPhone

$3.99 · Designed for iPhone. Not verified for macOS.

iPhone

Learn which antibiotics cover which bacteria, and why. 67 levels, animated lessons on how drugs work and how bacteria resist, a Gram stain lab and a daily Night Shift. I'm a microbiology resident, and ever since I studied antibiotics in medical school I've been thinking about how antibiotic coverage could be taught in a fun way. Many medical students, and residents too, really struggle with it. Go Narrow is my answer: a game that teaches which antibiotics cover which bacteria, and why. Each level is a culture plate. Tap the bacteria your antibiotic covers, leave the ones it doesn't, and use the culture result to choose the narrowest drug that works. Every wrong tap tells you why in one sentence: an enzyme destroys the drug, its target has changed, or the drug can't get in. The pairs you get wrong come back for review until they stick. Target lessons animate the mechanism of action, from the cell wall and membrane to the ribosome, DNA gyrase and folate synthesis. Resistance lessons show how bacteria fight back: MRSA, VRE, ESBL, AmpC, carbapenemases and CRAB. In the Lab you learn Gram staining step by step and train your eye for morphology: Klebsiella are Gram-negative rods, staphylococci Gram-positive cocci in clusters, streptococci Gram-positive cocci in chains. For learning only: real prescribing depends on local resistance, the site of infection and the patient, so always follow your local guidelines.

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• Animated lessons: watch how antibiotics work, step by step. The cell wall, the ribosome, DNA gyrase, metronidazole, nitrofurantoin, folate synthesis and the cell membrane (daptomycin). • Animated resistance lessons: MRSA, enterococci and VRE, ESBL and AmpC, carbapenemases and CRAB, and cefiderocol. • Each lesson ends with a short quiz, and a quick check lets you skip what you already know. • Every drug class gets a step-by-step walk-through. • The map now follows drug classes, in the same order as Study. • Night Shift: a new daily board with a score to beat. • The Lab: build a Gram stain slide and train your eye at the microscope. • New bugs: Strep B, S. epidermidis and Citrobacter. • Spot a mistake? Tap the flag at the top of a page to report it. • Your progress is now kept more safely on your phone. • Many fixes, clearer texts and a calmer look.

Version 1.1

The developer, Johanna Galaski, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    Johanna Galaski
    Size
    3.7 MB
    Category
    Education
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English
    Age Rating
    16+
    Copyright
    © 2026 Johanna Galaski
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.