OUTSIDE
指示
Unlock the portal and don't fall off! Use Arrow Keys or WASD to slide. You'll slide until you hit a black box. Grab the black key to unlock the portal, then slide into it to complete the level. When you move, the tiles you slide over will disappear, so think carefully about each move!
You'll also come across different colored tiles to slide on. You can slide on red tiles, which will then change to white and can be slid across again! Once you slide on yellow tiles, they will transform into black tiles that can no longer be slid on. Some tiles will have green boxes that will stop you from sliding.
解锁传送门，别掉下去！使用方向键或WASD键滑行。你会一直滑行，直到撞到黑盒子。拿到黑钥匙解锁传送门，然后滑进去完成关卡。每次移动，你滑过的方块都会消失，所以每一步都要仔细考虑！
你还会遇到不同颜色的方块可以滑行。你可以滑过红色方块，它们会变成白色，然后你就可以再次滑行了！滑过黄色方块后，它们会变成黑色，无法再滑行。有些方块上会有绿色方框，会阻止你滑行。
