This is a complete project targeted to the mobile platforms. Puzzle Editor is included – no code required for creating or modifying the levels.
The source code was built in Unity cross-platform game engine.
Unity is free to download game engine, you can simply download Unity and import the source code into it.
Monetization:Admob banner and interstitial ads
Key Features:

• Ready to publish
  
• Level Editor is included, you can edit or create new puzzles without coding
  
• Supports different puzzle size
  
• 120 pre-built levels (you can add even more)
  
• Mobile-friendly. Supports both phones and tablets
  
• Monetization:
  - Admob Ads (interstitials and banner)
  
  You can easily change any puzzle or create a new one just in a few clicks! No coding requires for creating new levels!
  Download and test apk: Connect Pipes APK
  Video of a gameplay: Connect Pipes gameplay