Hey @cecilialaruine!
You can use the Quote System API for that.
To have quotes related to the current game, simply modify the !addquote and !quote commands slightly, like this:
• !quote:
$(urlfetch https://twitch.center/customapi/quote?token=PUBLIC_TOKEN&data=$(querystring)%20$(twitch $(channel) "{{game}}"))
• !addquote:
$(urlfetch https://twitch.center/customapi/addquote?token=PRIVATE_TOKEN&data=$(querystring)%20%5B$(twitch $(channel) "{{game}}")%5D)