I made you the owner of the original guest post to make it easier for you to find.
It's probably some wonkiness related to using the SD card as Internal Storage. This feature is always prone to glitchiness, especially on Motorola devices. If you wait for an hour or so, do you notice that the games become available?
In general, we recommend against formatting the SD card as Internal Storage, because
(a) it can be buggy
(b) SD card read/write speeds are typically much slower than onboard memory, impacting performance, and
(c) SD cards are inherently less reliable than onboard memory, and if the card fails, the system can crash and data can be lost.
SD cards are best used as Portable Storage, primarily for documents and media files.