Challenge Mode

Current Challenge: Solomon Grundy/Earth 2

Requirements: Wonder Woman, Cyborg, and Sinestro

Ends: May 5th, 2022

Upcoming Challenge: Static/Prime

A Challenge or Challenge Mode is a regularly held event that usually starts on Thursday and lasts around two weeks (shorter for repeats, generally a week), in which players must beat 63 (repeatable for two further times at increasing difficulty for 189 total, which includes Expert and Nightmare mode) battles within that time for various prizes, but they are most well-known for unlocking challenge characters, which are the main source of new and more powerful characters for every player's roster. Batgirl is the first known challenge character while Lord Joker/Batman Ninja was the last challenge character to be added. Challenges may be repeated, which used to be rare but has since become the norm.

Mechanics

Internet connection is required for the challenge to appear, but once it appeared it can be played as long as you do not close the game. Connection is required to claim the rewards. They will be given once connection is re-established, and will be lost if not claimed before the challenge ends.

Each challenge has five challenge battles; challenge battle 1 to 4 has 12 fights and 5 has 15, including a boss fight against the challenge's unique character. Challenge battles can be done alongside Standard Battle without resetting progress. They can be done in any order, you don't need to complete a battle to work on another, although you still need to beat the matches in order.

Completing 2 challenge battles awards a Bronze Booster Pack, completing 3 awards 15,000 Power Credits, completing 4 awards a Silver Booster Pack, and completing 5 awards the challenge character. Additionally, after completing the Standard challenge, you can do the more difficult Expert challenge for the same rewards plus a random piece of uncommon (2-star) gear for completing it. Finally, the Nightmare challenge offers a 3-star gear specific to the challenge character.

However, this was changed as of the 2.11 update, and ONLY happened for the Challenges for the Suicide Squad characters and all of their repeats; the Standard difficulty contained only 9 battles each, with no characters requirements, except for the Bronze and Silver tiers, which are tier 1 and 2. Additionally, prizes for completing tiers have been improved (a Silver Booster Pack, Gear Locker, and Gold Booster Pack, respectively). Upon completing the Standard difficulty, it will be changed back to normal, except for the prizes. After the challenges (and the repeats as well), Raven/Teen Titans's challenge began and Challenge Mode was reverted back to its original way (though still without Challenge Credits). Challenge of Lobo/Bounty Hunter also has reduced amount of fight in the Standard difficulty, but still requires specific characters.

It is possible to simply pay Power Credits to skip battles. The price is high however, so try to avoid unnecessarily spending credits during the challenge, as players may be forced to skip some battles they are unable to beat.

Difficulty	Round 1	Round 2	Round 3	Round 4	Round 5
Standard	64,000	64,000	120,000	120,000	250,000
Expert	64,000	64,000	120,000	120,000	500,000
Nightmare	64,000	64,000	120,000	120,000	800,000
Total	192,000	192,000	360,000	360,000	1,550,000
Grand Total	2,654,000

Previously, battle 2 requires a random character just like battle 4 and 5 and battle 3 only allows bronze and silver characters, but this is switched around in the Martian Manhunter/Blackest Night challenge. The energy cost was unchanged, however: battle 2 still only consumes 1 bar of energy each while battle 3 consumes 2. This was changed back in Hal Jordan/Red Lantern's challenge.

Starting with the Blackest Night Martian Manhunter challenge, there would be a single match in the challenge that awards an unrelated gold card. It was Darkseid for this case, followed by Batman/Beyond Animated during the Hal Jordan/Red Lantern challenge; however, it was changed during and after Catwoman/Arkham Knight's challenge, so instead of a Gold card, you'll receive a Silver card instead.

Challenge characters

Here is a list of all challenge characters in roughly chronological order (not counting repeats). Note that while the Challenge Booster Pack only contains challenge characters, new challenge characters are usually added to the pack several months after the challenge expired, and not immediately, and does not contain Raven/Prime or Green Lantern/Red Son. The Special Challenge Booster Packs are temporary replacements to the aforementioned Challenge Booster, and contain many of the challenge characters up to the 2.13 update.

For a list of Challenge Mode characters and their requirements click here.

Trivia

There are no challenge versions of Ares, Cyborg, Lex Luthor, Nightwing, and Shazam.
On the other hand, there are no non-challenge versions of Raven, Hawkgirl, Martian Manhunter, Scorpion, Darkseid, Killer Frost, Zatanna, Static, The Arkham Knight, and Killer Croc.
Batman has the most Challenge characters in the game with 6 cards total.
Darkseid/Prime has the most repeated Challenges, with 10 Challenges repeats.
Prior to the release of The Flash/Elseworld (or up till Hawkgirl/Prime), challenges were not repeatable.
Prior to the release of Superman/Godfall (or up till Aquaman/Prime), the challenge front page will show the character in a different pose, mostly one of them leaping into the scene. Superman/Godfall and all following challenge characters only have their image on their card reused on the front page instead, although repeats of previous challenges will still use their old images.
A glitched version of the challenge battle description will briefly appear upon completing a challenge battle.
Deathstroke/Red Son and Zod/Prime were originally announced to have challenge repeats in the lull after Lobo/Bounty Hunter, but was never re-released and instead the 2.6 update brought in a bunch of all-new characters.
Since August 4th, the record of shortest challenge and/or shortest repeat is held by the repeat challenge of Lobo/Bounty Hunter, which lasted for only 2 hours before it was changed back to Darkseid/Apokolips's repeat as it was supposed to. The second shortest repeat is tied between three characters, Raven/Prime, Batman/Beyond Animated, and Superman/Godfall, who each lasted 2 days as part of a gauntlet event.
For a long time, Hawkgirl/Regime is the only Challenge character (and character overall) to not be available in any packs, until she was included in the fittingly named Nth Metal Pack.
In Challenge of Lobo/Bounty Hunter, Battle 1 of Standard difficulty can be played with any character, despite the bronze requirement.

Game modes
Standard • Challenge • Online • Survivor • Breakthrough • Phantom Zone