BOXBOY! + BOXGIRL! may start off pretty simple, but it gets tricky pretty quickly. So let’s get started on the co-op segment: World 9 (A Platform Ride for Two).
As there is a lot to cover, you may stumble across a solution to a level that may either be incomplete or not to the best it could be. If you have any solutions, please be so kind as to email us at firstname.lastname@example.org and we’ll be sure to provide credit if we use it.
Boxes Used: 7
Make a single box on the moving platform and place it to the far right so that you can use it as a step. Next, make a three-boxed backwards L (right x2 from one player and one on top of the right box) and use them as steps to reach the moving platform and over to the next segment.
Here, have one player stand on top of the other and the bottom player make two boxes above themselves and hold onto them so that the above player can jump and grab the Crown. Retract the boxes and have both player on the right platform. To get to the door, do the same thing we did before by make a backwards three-boxed L.
Boxes Used: 12
Both players needs to jump down to the platform and have one make a three-boxed L (right x2, up) to throw onto the spikes and use it to climb over.
For the next segment, make another three-boxed L to the right and have the other player climb it and place a single box onto the spikes to get across.
For the last segment and the Crown, make a single box on the spikes in the middle and use it to get across. Then have one player stand on the right edge of the second platform and make three boxes to the right whilst holding onto it. Then the other player can walk across it, grab the Crown, walk back over and have the first player drop the boxes so that it teeters on the edge. Walk across it, have the other player make a single box on the spikes and get to the door.
Boxes Used: 16
Have both players cross the platform, have one player make three vertical platforms to the left (left, up x2) and place it in the centre. Then have the other player make a three-boxed backwards L (right x2, up) and place it in the corner to be able to climb up and through when the boxes on the platform are covering the blue silhouette.
For the second part, have one player make two vertical boxes on the second leftmost tile of the platform. Then have the other player make another three-boxed backwards L to use as steps. Once up, wait for the left boxes to cover the red silhouette.
For the Crown, have one player stand on top of the other. Then have the bottom player make three boxes upwards, allowing the top player to jump and grab the Crown. Once that’s done, have both players move to the right platform and throw the three boxes on the rightmost tile of the left platform. Then when the right platform is at its highest, have the other player make two vertical boxes and throw them on top of the others so that the blue silhouette is covered for longer, allowing you to proceed through the door.
Boxes Used: 12
Make a three-boxed backwards L on the conveyor belt. Then have the other player make a single box and throw it to the far left of the belt. Move quickly up the stairs and walk through the opening when the time is right.
Similar concept, place a single box to the right and have it act as a step. Then have the other player make two boxes vertically to the far left and do the same thing.
For the Crown, have one player make a three-boxed backwards L and place it on the belt so it sits to the far right. Then, have the other player stand just to the left of it, with the first player standing on top of them. Make boxes upwards to lift them up to the Crown as shown below.
Once that’s done, retract the boxes and stand on the step boxes. Then have that other player make two boxes vertically and throw it down so that it covers the other silhouette.
Boxes Used: 15
Have BOXGIRL make a three-boxed left hook above her, pull herself up to the next ledge and stand on the red button. Then have BOXBOY do the same thing to pull himself up to the moving platform.
For the Crown, BOXBOY will need to make two platforms to the left of himself and jump to the right so that the furthermost left box lands on the rightmost block of the platform (as shown below). Then have BOXGIRL step off of the button, bringing the platform up and allowing BOXBOY to collect the Crown. Once that’s done, have BOXBOY press Y to pull himself back.
Have BOXGIRL stand on the button again and BOXBOY jump over to the blue button (but don’t stand on it just yet). BOXGIRL first needs to make a three-boxed right hook above herself and get up to the moving platform. Once she pulls herself up, make a single box to the left and shoot it so that it lands on the red button.
Now have BOXBOY stand on the blue button so BOXGIRL can now walk to the door. Have BOXBOY stand on the platform. BOXGIRL then needs to press X to dismantle the box, bringing the platform up. Have BOXBOY make a three-boxed right hook above himself to pull himself up.
Boxes Used: 15
Have one player stand on the blue platform and the other underneath the blue button and make two boxes upwards to press it in (but don’t let go of it). The first player can then make a three-boxed right hook above themselves, pull up to the top and stand on the red button. The bottom player will then need to retract the boxes and stand on the red platform, so then when the top player gets off the button, the bottom player can make a three-boxed right hook above them, have the top player use it as a bridge to get across and then the bottom player can pull themselves up.
Have one player make four boxes to the right without letting go so that the other can walk across, then retract the boxes. Have the top player make two boxes above them without letting go again to press in the blue button and the now bottom player can throw to horizontal boxes onto the spikes and collect the Crown.
Then the bottom player needs to head back to the blue platform and make four button in this order (right x2, up x2) in order to press in the red button. Now the top player can retract the boxes and the bottom player will come up a bit. The top player then needs to make three boxes as stairs and throw them down for the bottom player to get up and then move on to the door.
Boxes Used: 40
Have both players make some hooks to get up to the buttons. With BOXGIRL standing on the button, have BOXBOY get up on the red platform. BOXGIRL then needs to step off of the button and hook up to the right. Now up on the ledge, have her make a single box facing left and shoot it so that it falls onto the red button and allows her to walk across to the Crown.
Now have BOXGIRL press X to dismantle the box on the red button so that BOXBOY can get up to the blue button and place a single button onto it. BOXGIRL can then hook up to the platform whilst BOXBOY can go and grab the Crown.
Have BOXBOY walk off the moving platform and dismantle his box, allowing BOXGIRL to pull herself up to the red button and stand on it. This allows BOXBOY to pull himself up to the door. Have him face BOXGIRL on the edge of the red platform and make a bridge for her to cross, but retract them once she has crossed.