Is All Army Attack multiplayer?
Steam lists All Army Attack as single-player. The store page shows four features: Single-player, Steam Achievements, Full controller support and Family Sharing. It has no Multi-player, Co-op or Online Co-op category.
You build an army from cards and then watch it fight on its own, so the core game is a solo experience. The what is All Army Attack page has the rest of the store facts.

Screenshot: © Blacklight Games / Devolver Digital, via the official Steam page.
Is there online co-op?
No co-op mode has been announced. The store page lists none, and none of the screenshots we looked at show a second player’s army, a party list or a split screen.
If that changes, it will show up as a new category on the Steam store page or in a Steam news post. We will update this page.
What are the online friend challenges?
Outlets repeating the publisher’s demo copy say the demo includes online friend challenges. That is all we know. We do not know whether they are co-op, versus, score-based or something else, and the Steam page does not mention them.
Treat the feature as unconfirmed until the demo is live and someone has used it. See the demo guide for dates and the full reported contents. It is also not known whether the feature will exist in the 2027 release.

Screenshot: © Blacklight Games / Devolver Digital, via the official Steam page.
What is the “Player Name” label on the shop screen?
The shop screens in the Steam screenshots show a Player Name label in the top-left corner, with a person icon and a number next to it. The store page does not explain it. It might be a profile display or a ranking, or it might relate to the friend challenges. We will not guess.

Screenshot: © Blacklight Games / Devolver Digital, via the official Steam page.
Can you play with friends before the full release?
Nothing on the store page says so. The only mention is the reported friend challenges in the demo, which outlets place in Steam Auto-Battler Fest from November 16 to 23, 2026. Until someone has played it, treat them as unconfirmed. For how a round works when you play alone, see the how to play guide.
Sources and verification
- Steam store page for All Army Attack (categories: Single-player, Steam Achievements, Full controller support, Family Sharing)
- Steam Community hub
- Friend challenges: reports from Output Lag, Gematsu, MonsterVine and Simulation Daily
Last verified: November 15, 2026.
This is an unofficial fan wiki and is not affiliated with Blacklight Games or Devolver Digital.