@Love_my_doggie Many games that used a joystick in the arcade can be played on a regular computer keyboard, often with either the arrow keys, the numpad, or four other keys in place of a joystick, though the majority usually WASD. You might be asking,“Why WASD?”, but even if you aren’t, that and “How can you play a computer game without a joystick?” are so closely related questions that I may as well kill two birds with one stone.
First though, put your left pinky on the Shift key and your left thumb on the spacebar. look at where your left hand is on the keyboard. See how the fingers of your left hand are pretty close (in fact, probably on) the W,A,S and D keys? Can you see how those four letters do for the left hand what the arrow keys or IJKL do for the right hand? If so, then so far so good, but there’s more.
Even though most people are right-handed so it would seem IJKL would make more sense than WASD, enough games require both four keys and the mouse to control. The thing is most people use their right hand for mousing, so a lot of games will have you use your left hand for what arcade games would use a joystick for. With the left hand, it’s easier to hit WASD than IJKL or any of the other buttons that are usually on the right side of the keyboard.
Since it’s easier on everyone if most games just use the same buttons for the same function instead of forcing people to remember which games use which buttons for what, games will often use WASD as a pseudo-joystick unless, like Myst, it’s a game that can be played by just pointing and clicking the mouse.
A lot of games are simple enough that they don’t need much (if any) more than that. PC versions of arcade classics that were controlled with just one joystick (like Pacman or Frogger) will use just four keys. Some may use more keys for more things, like using the spacebar for something like jumping. It’s only the seriously heavy games like I gravitate towards that use more than 6 keys, so it’s pretty simple unless you’re like me and want it to be complicated.
And now you know that many games can be played perfectly fine using just the mouse and/or the keys on the keyboard instead of a joystick, with the bonus lesson of why WASD will often be four of keys used no matter what the game is.
Regarding consoles like the PS4 or Xbox, I feel that they are only worthwhile if you love a game that isn’t available on PC enough to spend $300–500 just to play that game. I like Gran Turismo, but not enough to spend hundreds of dollars on a PS4. However, I already have a PC, and I’m assuming you do too. Using what you already have costs a lot less than $300, so PC is the way to be, especially starting out.