First To Press

There will be 5 push buttons one for each of the 4 players and then a reset button. 

player 1

player 2

player 3

player 4

and for the host (reset)

COMPONENTS
SW1	N.O. Push Button
SW2	N.O. Push Button
SW3	N.O. Push Button
SW4	N.O. Push Button
SW5	N.O. Push Button
IC 1  and   IC 4	7408  quad 2 input and gate
IC 2  and   IC 3	4013  dual D flip flop
IC 5	7432 quad 2 input or gate
R1,R2,R3,R4, R5,R6	1k ohms 1/4W
R7,R8,R9,R10,R11,R12,R13,R14,R15,R16	10k ohms 1/4W
R17,R18,R19,R20	100 ohms 1/4W
D1,D2,D3,D4	LED
BZ1	Buzzer

First To Press Video

If SW 1 is pressed LED 1 will lit and the buzzer will turn on and  for the other SW, it will be disabled until the reset (SW5) is pressed...the same goes for  SW 2 3 and 4...

SW 5 is connected to the reset of all the D flip flop, then the Q’ of the And gate. When we press SW 5 all  Q’ will turn on so that the pin 8 of IC 3 will be high, and all  LEDs are low. Then one of the inputs of the And gate in IC 1 will be high. If one of the SW1 , SW2 ,SW3, SW4 is pressed one of the SET pin of the D flip flop will be high then its output Q will then be at high also, LED will turn on and pin 8 of IC 3 will be low.