Mobile Puzzle Game, Rainbow Theme -- 2

I’m building a mobile-only puzzle game and the core idea is simple: every screen should burst with rainbow colours. Think playful gradients, lively transitions, and a UI that feels bright and inviting from the very first tap.

The gameplay itself can follow classic match-3, block-shifting, or another quick-to-learn mechanic—what matters most is that it feels satisfying on a phone, loads fast, and lets the palette shine. I’m open on the visual approach; whether you lean toward cartoonish charm, realistic polish, or even pixel art, I only care that the rainbow motif feels integral rather than tacked on.

Key deliverables
• Fully playable mobile build (Android to start; iOS optional if time allows)
• Source project and assets, clearly organised
• Basic level set that shows off the colour mechanic
• Simple sound effects and background loop that fit the bright theme
• Short read-me explaining toolchain, SDK version, and how to compile

Acceptance criteria
• Game installs and runs smoothly on mid-range Android devices
• No critical bugs in the first ten levels
• Core colour effects match the rainbow concept throughout menus and gameplay

Unity, Godot, or another lightweight engine is fine as long as you can hand over the full source. Let me know which engine you prefer and how you’d weave those rainbow visuals naturally into both the puzzles and the interface.