If you want to make a popular game here's my recommendation. Make a clicker game so players can be obsessed with your game you've made. A shooting game is where everyone (kinda) likes these types of games because they like guns and they will get addicted to the game you've made. Lastly, a trend game were it is in trending like poppy playtime, skibidi toilet and etc.. you could combine clicker games and trending games the same time to make it popular. (Thats why i got 500 reacts for making a clicker game) yeah thats it.