Read game blurbs: theme is the look, format is how play works, and features...

https://sierra-wiki.win/index.php/Why_Game_Names_Help_Me_Find_a_Title_but_Don%E2%80%99t_Tell_Me_How_It_Plays

Read game blurbs: theme is the look, format is how play works, and features shape wins. Megaways names a format. Cascading reels and cluster pays show how wins form. Check pay rules, bonus terms, and bet limits