The Mystery Of The Crystal Portal (Android) app for $0.99

Journalist Nicole Rankwist cares deeply for her father, an archaeologist. When he goes missing after making a discovery he thinks could "change the course of humanity," she knows that she can't rest until she discovers what happened to him.

Thus begins The Mystery of the Crystal Portal, a brain-bending game that will test your eyes and wits. As Nicole, you will travel to exotic locations and put your investigative abilities to the test as you seek answers.+