増減ゲートと最終バリアを突破する群衆ランナーゲーム

Build a casual 3D crowd-runner game that plays in the browser. The player steers a small group of colorful characters down a long track and passes through gates that add or subtract members, such as plus twelve or minus twenty, and multiply gates. The goal is to arrive at the final barrier with enough people to meet its requirement, shown on a sign. Use a soft, warm pastel look with rounded arches and cream floors, a large live counter of the crowd size, short on-screen hints between gates, and a start and result panel. Keep the camera behind the crowd with a gentle tilt. Controls: left and right movement by mouse drag or arrow keys. Add simple sound cues for gates and the final check. Deliver a single playable project that runs without installation. Done means a full run from start to the final barrier with a clear win or lose message and a replay button. Make the interface text easy to translate.