Batting: Using Up, Left and Right arrow keys you choose how to hit the ball. To block fireball you use Down arrow key. You have to collect 1000 points to qualify for the next level. It is not too clear where the ball goes. For a good hit you get 300 or 500 points. If fielder catches the ball you're out, but that only means that you get 0 points but still move on with the game.
Throwing/Bowling: This is a practice mode. You are in an enclosed hall and wickets are moving left and right. Using arrow keys on the keyboard you choose the direction where you want to throw the ball, and with the Up arrow you throw the ball. Power meter periodically moves between the minimum and the maximum, so you should try to throw the ball when it is at maximum speed to make the most accurate hit. Every wicket brings you 1000 points, and you have limited number of balls, 10 of them.
Catching: There are 3 players in the field jumping and catching the balls fired from the cricket bowling machine. Using Up, Left and Right arrow keys you control each player individually. Balls are fired out randomly all around the field, so you have to react fast.
Once you finish Level 1, you move on to Level 2 and then you go through all previous stages again, they just become more difficult.
Pixel Art games were back in the day all made in low resolution, but only because of the limited capacities of computers/processors and drawing programs. However, developers even today use this type of games occasionally, if nothing else to give the older players a stroll down the memory lane when all games were made like that and to remind them of their gaming days in their youth. Still the bottom line is - it all comes down to gameplay, right?