How a mobile game is actually built
Every mobile game starts with a loop: the small set of actions a player repeats, and the reward that makes them repeat it. We prototype that loop first, usually in grey boxes, because a loop that is not fun without art will not be fixed by art. Only after it holds up on a real phone do we commit to the art style, the level count and the economy.
Then comes the technical choice. Most projects ship from a single engine, commonly Unity, so one team can release to iOS and Android together. The client talks to a backend that stores progress, runs leaderboards and checks purchases. Putting that logic on a server matters. If the game trusts the phone, the first modified build will hand out free currency and your economy is gone.
Plan on 8 to 14 weeks from signed scope to a store-ready build for a focused game. Larger worlds, multiplayer and 3D art push that out, and we say so at scoping, not halfway through.
