What is the Max Level for characters?
Characters can go up to level 50
How far can I promote/fuse?
Characters can have a Fusion level of 7
Equipment can have a Fusion level of 10
Character upgrades can have a Fusion level of 4
Are there fatalities in the mobile version of Mortal Kombat X?
Yes and no, but mostly no.
You cannot perform fatalities like regular Mortal Kombat. Instead, fatalities are scripted events that happen in specific towers during the game. Anytime you are at a tower with a must use character, like Demolition Sonya Blade at an early tower, the end boss fight will result in a QTE (quick-time event) that executes a fatality.
Are there X-Ray Attacks?
Yes, but only Gold characters have them.
Are there Gold Cards in the Kard (Silver) Pack?
Yes! So far the confirmed cards are both versions of Reptile, both versions of Johnny Cage, Commando Kano, Cryomancer Sub-Zero. I have heard rumors but cannot confirm Mournful Kitana and possibly others! However, all of these are rare pulls.