is widely regarded as a significant milestone for mobile fighting games, famously known as the last version to feature full offline support . Unlike subsequent updates that shifted to an online-only, server-side model prone to lag, version 1.21.0 allows players to enjoy the core experience—including the Krypt, Battle Mode, and Towers—without a constant internet connection. Key Features of the 1.21.0 Update

: Players can complete gameplay tasks to unlock character-specific customisations like victory stances, taunts, and banners, which also provide permanent stat increases .

: The store in this version is notably different from later iterations, featuring various packs like the Elite Diamond Pack and Netherrealm Pack without the modern 7-day waiting periods. Technical Performance and Requirements

: This version debuted four brutal fighters tailored for the season: Pretty Lady Leatherface Unstoppable Jason Nightmare Freddy Krueger Vampiress Mileena

: Added new gear such as Shang Tsung's Stone and the Rusty Chainsaw .

Version 1.21.0 is often sought after for its superior loading times and "universal" GPU compatibility.

Released around October 2018, this "Halloween Update" introduced a wave of horror-themed content and technical refinements.