Don't care what engine they use, but would love a sequel.
I feel the treasure tracker is a great game for a portable handheld device. Such a good game for quick gaming sessions. You know right before bed, do a quick level. While at lunch, do a couple levels, ect.
But the first game was beautiful as well, so I imagine 2 would be equally as beautiful, thus still like the idea of putting it up on big screen at times.