Level 178 is also a digging and timed level. This time 20 meters down and over 4 minutes on the clock (4:10?). Don't be fooled by the long time on the clock, you will need every second. It's much easier to make matches on this level, but you must be mindful of the doom jewels that drop in. The timer is sufficiently long on the doom jewel, about 20-30 seconds. You'll have plenty of time to get rid of them. Much more pleasant level because it feels like you're making more progress than on the previous level, so have fun with this one