I’m sure I’m not the first person to realize that there are some similarities between Half Life and the Matrix. It’s hard to say if it’s intentional or not, since they were only released a year apart.
Agent Smith and the G-Man. They’re both shadowy government-like figures (but they don’t actually work for the government). They both wear suits. They both have very distinctive, drawling kinds of voices.
The Gluon gun and the gun that Cypher uses to injure Tank and kill Dozer. The particle stream that they emit looks very similar, and they both make a very similar sound.
That’s all I can think of at the moment.