Diablo Immortal - You don't need a phone, but you will need a credit card
Playing Diablo as a kid, I was blown away by the idea of actively attacking and casting spells at my enemies. I had a strange love affair with Fire Wall which probably didn't have any lasting psychological effects at all. At the time, I never considered the implications of the franchise continuing for another 25 years, or that cell phones would have games on them. I was just out there torching fields of pixelated monsters and loving every minute of it knowing that I bought the game and wouldn't have to p