Mario Bros Star Road

Good evening, for this you need to have all the star coins from all levels of all worlds, which is done with the normal levels. Now you have to do the same with the secret levels. If you want to unlock them:

M1-S: you need to complete level 1-2 and go to the pink crystal where there is a red ring above. Once you get there, all you have to do is jump and continue your way to the blue crystal with the point sticking out. You need to position yourself on that point then jump onto another ceiling and continue your path once again without stopping to reach the secret exit.
M2-S: you need to complete level 2-4 and go to the end of the level. There's a spike waiting for you on a "?" block and a pillar next to it with a sign: you need to go underneath by running and then crouching to reach a pipe that will take you to the secret exit.
M3-S: you need to complete level 3-Wreck and go to the area with the false walls (walls that you can pass through). Continue your path until you see the first panel. You need to reach the door above by jumping against the ceiling next to you or use a super acorn to access the secret exit and retrieve the 3rd star coin.
M4-S: you need to complete level 4-Manor and go up to the room with the line of coins. You need to activate the P switch, go over the coins turned into blocks, and jump over the exit door. It will be easier to use a P acorn.
M5-S: you need to complete level 5-Manor and take the door at the bottom left. Go up with the platform and stick to the left wall until you pass through a false wall and enter the door. Then you need to stick to the right wall to get a star coin and continue your path normally.
M6-S: you need to complete level 6-tower 1 and go until you reach the horizontal pipes that move from left to right. You will need the mini mushroom and wait for the right moment to enter the mini pipe just below a spike ball generator. You will obtain the 3rd star coin by following this path.
M8-4: you need to complete level 8-1 and go until you see a P switch. Activate it and rush until you find a "pipe in the sky". You will then access the secret exit.

Then you need to obtain the star coins from these levels to complete world 9

PS: I couldn't put a link, it gave me a -1 vote and if I refreshed the page the message disappeared