Runtime

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Content rating
Everyone
10+
Downloads
Content rating
Everyone
Learn more
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About this game

Master the core engineering concepts every software engineer is expected to know — system design, distributed systems, databases, security, networking, and DevOps — by playing a story-driven mobile game.

RUNTIME is a narrative learning game for aspiring software engineers, computer science students, junior developers, and tech enthusiasts who want to truly understand how the software behind the modern internet actually works — without slogging through textbooks or 10-hour YouTube playlists.

Every concept lives inside a scenario: a late-night production outage, a scaling crisis, a security breach, a schema migration gone wrong. You don't read about load balancing — you play through a traffic spike and feel what breaks. That's how the expertise sticks.

You play a junior engineer at a fictional tech company. As a corporate mystery unfolds around you, you solve the same problems real SREs, backend engineers, and system architects face every day — in interactive minigames, branching dialogues, and progressively deeper knowledge cards.

WHAT'S INSIDE:

▸ Two complete worlds (32 chapters)
• The Architect's City — system architecture & distributed systems
• Ghost Protocol — databases, transactions & data management

▸ Three more worlds coming soon
• Operating Systems
• Generative AI
• Ethical Hacking

▸ 12+ interactive minigames
• Network Packet Router (CDN + latency)
• Scale City (autoscaling & SLA tradeoffs)
• JWT Decoder (security & tampering detection)
• CAP Theorem Triangle (consistency vs availability)
• Query Optimizer (SQL performance)
• Cache Eviction (LRU vs LFU strategy)
• Circuit Breaker & Rate Limiter config
• Docker & Kubernetes YAML builder
• Storage Selector (SQL vs NoSQL)
• Architecture Assembler
• Grafana dashboard reading
• …and more

▸ 140+ knowledge cards across three learning layers
• Layer 1: quick intro — grasp the concept in 30 seconds
• Layer 2: deep dive — technical detail, markdown & embedded videos
• Layer 3: real-world impact — why it matters at scale

▸ Story-driven gameplay
• Branching dialogue with real consequences
• 8 voiced characters across two worlds
• Corporate thriller narrative grounded in real engineering problems

▸ Gamification that actually teaches
• XP for correct decisions, partial credit for good-but-not-perfect answers
• Star-based chapter unlocks (must earn ≥2 stars to progress)
• Mastery badges — rendered as shareable PNGs
• Free-play Practice mode for pure skill building
• Hint system (5 per hour)

▸ Built for real life
• Plays offline — syncs when you're back online
• Landscape-immersive UI
• Clean, cyberpunk-inspired visual design


WHO IT'S FOR:

• CS & engineering students preparing for placements or internships
• Self-taught developers leveling up on backend fundamentals
• Junior engineers ramping up on distributed systems
• Anyone prepping for system design interviews at FAANG/MAANG or top product companies
• Curious tech enthusiasts who want to understand how the internet actually works

WHAT YOU'LL ACTUALLY LEARN:

Load balancing • CDNs • Autoscaling • Caching strategies • Rate limiting • Circuit breakers • CAP theorem • Database indexing & query optimization • Transaction isolation levels • SQL vs NoSQL tradeoffs • JWTs & authentication • Docker & Kubernetes basics • Message queues • Microservices patterns • Observability & monitoring

Every concept is taught inside a situation — not as a definition to memorize, but as a decision you have to make under pressure, with stakes.

BUILT BY A STUDENT, FOR STUDENTS

RUNTIME was built by a Computer Engineering student at Sardar Patel Institute of Technology (SPIT), Mumbai — the learning tool I wished existed while grinding system design prep.

If you've ever closed a 40-minute YouTube lecture and realized you didn't absorb anything — this is for you.

Download RUNTIME. Play a chapter. Learn something that'll show up in your next interview.
Updated on
May 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

What’s new

Welcome to Runtime — learn concepts by playing through them.
• Story-driven lessons on core engineering concepts
• Real interview questions hidden as story choices
• Knowledge cards + video explainers
• Daily streaks
• Works offline, saves progress
Content rating
Everyone
Learn more

App support

Phone number
+918369978723
About the developer
Saachi Harish Peswani
peswanisaachi@gmail.com
India

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