20 Free Mobile Game Development Resources & SDKs (2025 Edition)

Cross-platform mobile game engine with Android and iOS support, mobile optimizations, and built-in monetization.
Perfect for: 2D/3D games, cross-platform, indie developers

High-end mobile graphics with Android and iOS support, advanced rendering, and mobile optimizations.
Features: AAA graphics, mobile optimization, free for indie

Open-source mobile game engine with Android and iOS export, 2D/3D support, and lightweight runtime.
Perfect for: 2D games, indie projects, open source

Google's mobile framework for cross-platform games with Dart programming and native performance.
Features: Single codebase, native performance, hot reload

JavaScript mobile framework for cross-platform games with React and native modules.
Perfect for: Web developers, simple games, rapid prototyping

Google's official Android game tools with performance profiling, frame pacing, and game optimization.
Features: Performance tools, game optimization, Android Studio

Google's backend platform for mobile games with analytics, authentication, and cloud functions.
Perfect for: Backend services, analytics, user management

Google's mobile ad network with banner, interstitial, and rewarded video ads for monetization.
Features: Ad monetization, mediation, analytics

Free game analytics platform with player behavior tracking, retention analysis, and revenue metrics.
Perfect for: Analytics, player insights, data-driven decisions

Free push notification service for mobile games with segmentation, scheduling, and A/B testing.
Features: Push notifications, user segmentation, free tier

Free multiplayer networking for Unity mobile games with real-time multiplayer and matchmaking.
Perfect for: Multiplayer games, real-time sync, matchmaking

Mobile ad mediation platform with multiple ad networks, revenue optimization, and analytics.
Features: Ad mediation, revenue optimization, free tier

Unity's ad network for mobile games with rewarded video, interstitial, and banner ads.
Perfect for: Unity developers, ad monetization, easy integration

Mobile ad network with high eCPM rates, rewarded video ads, and programmatic buying.
Features: High eCPM, rewarded ads, mediation

Free mobile attribution platform with install tracking, user acquisition analytics, and fraud prevention.
Perfect for: Attribution, user acquisition, marketing analytics

Mobile ad mediation platform with multiple ad networks, revenue optimization, and user acquisition.
Features: Ad mediation, user acquisition, free tier

Google's gaming platform for Android with achievements, leaderboards, and multiplayer features.
Perfect for: Android games, social features, achievements

Apple's gaming platform for iOS with achievements, leaderboards, and multiplayer matchmaking.
Features: Achievements, leaderboards, multiplayer

Free 2D/3D game engine with mobile export, visual editor, and TypeScript/JavaScript support.
Perfect for: 2D games, mobile export, visual scripting

Free 2D game engine with Android and iOS export, Lua scripting, and lightweight runtime.
Features: 2D games, mobile optimized, free forever