Complete the text with the correct forms of the given words

One of the [ ] computer games was Spacewar!The game was developed in 1962 by several programmers from the Massachusetts Institute of Technology. The group leaders [ ] Steve Russell and Martin Graetz. They [ ] at a university travel club sometime before. Both of them [ ] a passion for science fiction. They [ ] to start coding in their free time, but soon it became bigger than just a hobby.

The gameplay [ ] quite simple. There were two spaceships in gravity, both controlled by human players. Each ship had some weapons and fuel for manoeuvring. Ships were destroyed if they hit each other, a torpedo or a star while they [ ].

Spacewar! was extremely popular within the programming community in the 1960s. The appearance of that game [ ] plenty of other computer games.