How to Get Free Credits in Injustice 2

Injustice 2 Mobile (NetherRealm Studios / WB Games) is still active in 2026, with live servers and regular updates on iOS and Android. It's a 3v3 fighting game with characters from the DC universe, where every hero needs constant upgrades: leveling special abilities, raising star rank or rerolling talents. All of that consumes Credits, the game's free currency earned by playing (unlike Gems, which are paid but also have limited free routes through league events, operations or the Champions Arena). Credits can't be bought directly with real money: they build up by completing the campaign, rotating resource missions, achievements and daily league activities. The more advanced your account, the more expensive it gets to max out each character's abilities (the final levels of Special 3 can cost more than 1.7 million credits), so making the most of every source is key to avoiding a bottleneck. In this guide we cover, from most to least profitable, every real method for getting free Credits in Injustice 2 Mobile, how much you can expect from each and how often they're available.

What's the fastest way to get Credits in Injustice 2?

We've gathered and verified every real method for getting free Credits, ranked from most to least profitable based on the time they take and what you can actually earn from each. No tricks, no generators — just the game's own mechanics.

Variable, bigger rewards in the early chapters Variable

Campaign mode (story)

The campaign is the strongest source of Credits when starting the game: every chapter and every individual fight grants credits upon completion, on top of account and gear experience. Chapters can be replayed (at an energy cost) once finished, letting you re-farm credits in the stretches that give the best reward per energy spent. It's the priority route in your account's first few weeks, while there are still new chapters to unlock; as you level up, the return per fight drops and other sources (achievements, league) gain relative weight.

Variable depending on account level Weekly

Credit resource missions (Sundays)

Resource missions unlock at account level 4 and change type each day of the week on a weekly rotation. On Sundays specifically, the active mission set gives Credits as the main reward (the rest of the week usually hands out experience or other materials). It's worth saving your Sunday daily energy to complete as many of these missions as possible, since it's the only weekly window dedicated exclusively to this currency within the resource mission system.

Fixed rewards, some worth several thousand credits One-time

Achievements

Achievements are permanent objectives organized into ascending 'tracks': account progression, character ascension, ability upgrades or completed league mission stages (up to 350 cumulative stages). Each unlocked milestone gives a fixed reward that, in many tiers, includes Credits, plus fragments of specific heroes. Since these are one-time rewards per achievement, it's worth checking the achievements tab regularly to claim any you've already completed without noticing, instead of letting them pile up.

Variable per stage completed Daily

League missions

Joining an active league gives access to league missions, completed cooperatively in stages together with the rest of the members. Each stage cleared distributes rewards to the group, and they also serve as an indirect Credit source because they feed the achievements tied to the number of stages completed. An active league (with members checking in and participating daily) clears stages far faster than an inactive one, so your actual return depends largely on picking a consistently active league.

Occasional reward, not guaranteed Variable

Operations

Operations are temporary events of varying length that hand out random rewards on completion, including level 1 gear, fragments of specific characters and, less often, credits or gems. The longer the operation, the higher the chance of getting higher-value rewards, but there's no guarantee currency will drop on any given round. Treat it as an extra that complements the campaign and resource missions, not as a main source to prioritize your time around.

How much free Credits can you get per month?

Source	Estimated amount	Frequency
Campaign / chapter replays	Variable	Based on daily energy
Credit resource missions	Variable	1 day a week (Sunday)
Completed achievements	Variable (fixed reward per achievement)	One time per achievement
League missions	Variable	Daily, depending on league activity
Estimated total	Not reliably quantifiable	—

There are no official or consistent figures for credits per hour or per month: performance depends on account level, available energy, your current campaign chapter and your league's activity, so any specific figure would be made up. What is consistent is that credit needs grow much faster than passive generation, which is why combining every active source in this guide is the only way to avoid falling short.

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Frequently asked questions

Is Injustice 2 Mobile still active in 2026?

Yes. As of this guide, Injustice 2 Mobile's servers are up and running on iOS and Android, with ongoing events, operations and Arena seasons. There's no official shutdown announcement from WB Games or NetherRealm.

What's the difference between Credits and Gems in Injustice 2 Mobile?

Credits are the free currency earned by playing (campaign, resource missions, achievements, league) and are used to upgrade abilities, reroll talents and buy basic chests. Gems are the premium currency, meant to be bought with real money, though they can also be earned free in limited amounts through league check-in, operations and Arena or Champions Arena seasons.

Is it worth buying generators or websites that promise unlimited free credits or gems?

No. Any website, app or generator that promises unlimited credits or gems in exchange for entering your account details is a scam: there's no legitimate method outside the game itself to generate this currency, and those kinds of sites only aim to steal accounts or personal data. The only safe way to get credits is by playing Injustice 2 Mobile itself.

How to get free Credits in Injustice 2