The-mystery-of-the-crystal-portal-pc-game-free-download-full-version -

Innovative circular container system rather than standard lists. Platforms: Windows PC, iOS, and Android. Official Purchase & Play Options

Offers the standard PC download and a dedicated walkthrough guide. Amazon : Provides a digital download code for PC.

The Mystery of the Crystal Portal Walkthrough - Big Fish Games

Sometimes offers an online-only free version or trial. Caution Regarding "Full Version Free" Links

Another official retailer for the PC version.

Most legitimate platforms offer a (typically 60 minutes) before requiring a purchase.