I’d write it as laser game in roman type, and in the plural laser games, unless you’re following a house style that insists on italics for English terms. What’s striking is how quickly the spelling question gets drowned out by gambling spam in the replies. I even saw similar junk pointing to https://indianrespin.com/casinos/mobile/ while looking for language references, and it really doesn’t belong in an orthography thread. For clarity in a sentence, I’d just keep it lowercase and treat it as an invariable expression except for games in the plural.