You only live once (itch)

In 1991, a city-sized spacecraft crashes in Vancouver island on Earth. Over the course of 30 years the military organization Banana Space Agency reverse-engineers its technology and rebuilds the spacecraft, naming it 'You Only Live Once'. In 2021, The top pilot in the Banana Space Agency finally restored the spacecraft. Meanwhile, the alien mother battleship detects the spacecraft and begins to rescue the spacecraft and the hibernated alien inside...