You played the free lite version of ProjectY but that is not enough? For sure it isn’t!
The full version comes with lots more maps for use in singleplayer and multiplayer and with a full blown story mode for singleplayer which offers hours of intense gameplay in 3 chapters with 6 missions each!
Get the full version from Google Play (for all non-Amazon Android devices):
Or play it on Amazon Underground (for all Amazon Android devices, Kindle etc.)