When Dragon Quest Heroes launched in Japan, Sony Computer Entertainment Japan Asia and Square Enix took over the 80 meter-long wall at the Tokyo Metro Marunouchi Line Shinjuku Station’s Metro Promenade asking commuters to help defeat 100,000 slimes represented by a massive sheet of bubble wrap.

Now, with Dragon Quest Builders, a block-make RPG due out for PlayStation 4, PlayStation 3, and PS Vita on January 28, Sony and Square Enix have taken over the 80 meter-long wall once again, asking that commuters remove one of the 180,000 blocks that make up its Dragonlord and monsters pixel image. By removing these blocks and “defeating” the monsters and Dragonlord, a special poster underneath will gradually be unveiled.

About 300 of the 180,000 blocks contain a special QR code that lets you download an original wallpaper. If you get one, don’t forget to share it with the internet.

If you’re passing by the Metro Promenade at Tokyo Metro Marunouchi Line Shinjuku Station, block removal is possible starting January 28 at 7:00 a.m.

In addition to the wall takeover, Sony and Square Enix are also taking over the pillars that line the Metro Promenade in what they’re calling the “Shinjuku Monster Road.” A total of 30 monsters will appear, and while some are labelled “?,” their identities will be revealed on January 26.

Dragon Quest Builders has not yet been confirmed for release outside of Japan.

Thanks, PlayStation Blog.