Page "Enigma (video game)" Paragraph 10

In Oxyd landscapes, being the most common level types in Enigma, players must activate matching Oxyd stones.

When Oxyd stones are hit by a marble, laser beam, or certain types of moving brick, they open to reveal a coloured circle.

If two matching Oxyd stones are activated they remain open, while if non-matching Oxyd stones are activated the first one closes.

There are a maximum total of twelve different colours in Oxyd stones.

When all Oxyd stones are open the level is complete.