I've been building a game on a real 3D model of Hong Kong, and it's out now.

香港大作戰 (Hong Kong · Survival). You and three AI squadmates fight across a district to a helicopter extract. Common infected come from every direction. Checkpoints heal the squad, refill reserves and bring dead teammates back. A Director decides when you get a break and when you don't — and near the LZ it stops giving you one at all.

The specials are the fun part: Boomer, Hunter, Spitter, Charger (shoot it off, shoving won't work), Jockey, a Witch that stays dormant until she's crowded, shot, or just heard, and a Tank that punches up close and throws rocks at range. Reaching the extract doesn't win — it starts three escalating waves and a rescue timer you have to stand on the pad to survive.

The thing I can't stop showing people is that the streets are the actual streets. The Tsim Sha Tsui campaign is 3.45 km of buildings standing where they really stand — you can walk to the place you get lunch. Causeway Bay and Tai Po are in there too.

Other bits:

\- 廣東話 and English, both complete.

\- Phone game, landscape, on-screen stick and buttons. Also runs in a desktop browser.

\- Two modes: the campaign, and Kill Rush — ten minutes, no route, no extract, just how many.

\- Three difficulties, which change horde size, speed, damage and friendly fire.

\- First launch needs no download at all — it boots into a procedural maze map. Districts stream while you play, or download one for offline. A district is several GB, so do that on Wi-Fi.

Happy to answer anything about how the city got in there — that was the interesting half of the project.

I built a zombie survival game on a real 3D model of Hong Kong — Tsim Sha Tsui, Causeway Bay and Tai Po