You have 5 arcade games. An arcade is a place that houses arcade games. Or did you mean that you have five separate venues featuring arcade games?
See, an arcade is a type of roman architecture. It's room made up of a series or arched hallways. Often these were used to house shops and stalls in antiquity.
https://en.wikipedia.org/wiki/Arcade_(architecture)
In our time, an arcade game was a midway type game that was coin-operated, and could fit into... You guessed it; shops and stalls... A "Video Arcade". Hence they are "Arcade games".