This game is very simple ! The computer starts by displaying a coloured tile. You then press a key using:

'R' Red
'Y' Yellow
'G' Green
'B' Blue

to match the colour. The computer displays the first tile again and then a new one. You then follow and so it continues... You get a point every time you respond correctly to the sequence. The game ends when you make a mistake ! You score 1 point for each complete sequence.Good luck !