This is Marbles by Ola Zandelin

As a marble, You need to move around the maze, over tiles, some are blank, some have arrows on them, and you can switch tiles by clicking on them

You start on a tile which looks like a Grate, and you must proceed to another tile which also looks like a Grate/Drain Cover, while avoiding skulls, some tiles look like broken stones, which will disappear when you go over them twice, others are solid blocks without Grate covers, which can be walked upon multiple times

This game is quite challenging, and later levels get much harder, and those collapsible tiles will make it more difficult for you to continue on if you roll onto them too many times

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Code: Ola Zandelin