Originally released all the way back in 1993, Myst [99¢] was the best selling PC game of all time until The Sims stole that title in 2002. If you had a computer with a CD-ROM drive in the mid-90’s, chances are you’ve played Myst.
If for some reason you haven’t, or this era of PC gaming is before your time, here’s the gist- Myst is a first person puzzle-centric exploration game set in a pre-rendered 3D world which was absolutely breathtaking to behold when it was originally released. It’s entirely tap-driven to move around and fiddle with the various in-game widgets to solve puzzles and progress through the game. For more details, check out Arn’s eloquent reflection on the game from back when it was originally released.
For 99¢, this is a blast from the past you shouldn’t miss.