Rival Books of Aster is a strategy deck building game that features over 140 hand illustrated spells that you can use to build custom decks and go head to head against other players. Each spell is also a page in a living story book that translates itself and reveals its secrets as you play the game.
All Reviews:
Mostly Positive (38) - 76% of the 38 user reviews for this game are positive.
Release Date:
Jun 20, 2017

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Early Access Game

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Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We're a very small team that wanted to bring our game to Steam. The community greenlit us and we've been working hard on a build that has all of the core features intact. We could keep the game secret and keep adding secondary features until the cows come home, but the game is stable and ready to play now, so we want to make it available to players as Early Access.”

Approximately how long will this game be in Early Access?

“5-8 months”

How is the full version planned to differ from the Early Access version?

“- Graphical and performance improvements
- More in-game community features
- Better player stats & matchmaking
- More cards
- Story-telling mechanisms
- Steam trading cards
- Steam achievements”

What is the current state of the Early Access version?

“All core game features are done:
- Collect cards
- Build and save custom decks
- Find an opponent
- Play against AI
- Challenge a friend
- Unlock storybook pages”

Will the game be priced differently during and after Early Access?

“Yes. During Early Access players receive their first deck for free, and all DLC prices are lower than they will be at launch.”

How are you planning on involving the Community in your development process?

“We want as much feedback as we can get from interested players. Bug reports are invaluable, so are opinions on UI/UX improvements.

Rival Books of Aster is a complex strategy card game with a lot of rules and gameplay possibilities. Our small team has done their best to balance gameplay across over 200 planned cards, but we need player volume to help show us where we could be doing better. We will stay actively involved with our players and listen to game balance feedback, pushing updates to cards roughly every week.”
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Recent updates View all (9)

September 1

Release notes build #2079684

New Features
  • Added Page flipping animation to chronicles
  • Added hint lines to tutorials
  • Darkened background for dialogs
  • Show message when deck runs out of cards
  • Added indicators for chronicles unlock progress
  • Deck builder button text changes between "stats" and "list"
  • Show only one gameplay error popup at a time
Bug Fixes
  • Fixed some visual glitches in tutorials
  • Fixed some visual glitches in chronicles
  • Hide duplicate users from recently played list
  • Fix incorrect number of cards in deck when milling
  • Fixed some visual glitches with tooltips in gameplay
  • Fix Heptameron starter deck showing the wrong cards
0 comments Read more

July 28

Release notes - build 1994824

New Features
  • Show recently played users on the multiplayer screen
  • Show your avatar in more places
  • Added shadows to chronicles pages

Bug Fixes
  • Fixed multiple issues related to playing cards rapidly
  • Fixed an issue where the game would load without card art
  • Fixed multiple visual issues related to cards in hand
  • Fixed opponent cards-in-hand count going negative
  • Fixed duplicate entries showing in friend list
  • Fixed opponent's snare indicator not showing
0 comments Read more
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About This Game

Rival Books of Aster is a strategy card game that features over 140 hand illustrated spells that you can use to build custom decks and go head to head against other players. Each spell is also a page in a living story book that translates itself and reveals its secrets as you play the game.

Rival Books of Aster does NOT contain randomized booster packs. Play for free with a starter deck of your choice, and expand your collection with DLC packs containing known-quantities of cards.

Can you decipher the Rival Books to save your household and rule the plane of Aster?

- Full training levels (or you can jump right in and play)
- An easy to use deck-builder
- Matchmaking & ranking system
- A unique take on familiar game mechanics
- 4 distinct art styles by award winning artists
- Over 140 different spells & characters (with 60+ more coming soon!)
- Endless gameplay possibilities
- AI opponents to battle any time

System Requirements

Mac OS X
    • OS: 10
    • Memory: 1 GB RAM
    • DirectX: Version 9.0
    • Storage: 500 MB available space
    • DirectX: Version 12
    • OS: 10.8
    • Memory: 1 GB RAM
    • Storage: 500 MB available space
    • OS: 10.10
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