Astra Bestiary: The Complete Monster Taming Guide

Overview

Astra Bestiary is a 2D monster-taming RPG from Bicho Feo, launching on Steam on November 3, 2026, with a playable demo already live. You explore Yselion, a fallen world where a lost civilization left behind Beasts, ruins, and unanswered questions, and you record everything you discover in the bestiary, the tome that gives the game its name. The pitch splits cleanly into three pillars: raise over 150 fully animated Beasts whose evolution paths bend to your care, ride every adult Beast across a perilous open world, and fight fast tactical battles where the right skill at the right time wins.

The boldest system is inheritance. Beasts age and pass away, but the power they accumulate is stored in mysterious orbs that other Beasts absorb. Death feeds the next generation, and the store page frames it plainly: death is not the end, it is the next step in their journey. That single mechanic separates Astra Bestiary from the creature-collector crowd, because your roster is a lineage rather than a static collection.

Minimum specs are generous: any Intel/AMD CPU, 4 GB RAM, integrated graphics, DirectX 10. This is a game built to run everywhere, and the store page lists Steam Deck compatibility outright.

Who this is for: Creature Collector fans who want evolution that answers to their choices, tactical battlers who like reading skills and timing, and anyone who bounced off mainline monster-collecting games for lacking an open, rideable world. Who should wait: players wanting multiplayer or real-time action combat. Battles are tactical and turn-driven, not reflex-based.

How to Play: From First Egg to First Champion

The demo is live, and the opening hours set patterns that hold for the whole game. Work through them in this order.

1. Hatch early, bond early. Beasts follow a unique path shaped entirely by your choices and care. The care you invest in the first hours, feeding, training, and battling together, sets which evolution branches open later. An ignored Beast is a weaker branch forever.
2. Fill the bestiary as you go. Every discovery is inscribed into the tome, and with every entry you draw closer to the truth behind the fallen empire. The bestiary doubles as your progression journal, so write entries as you meet creatures rather than backtracking later.
3. Take the first Star Trial seriously. The Star Trials are the game's proving grounds, and only the fittest endure. Before attempting one, bring a Beast whose skills cover both damage and survival, because the trials are where the tactical battle system stops being gentle.
4. Ride everywhere you can. Every Adult Beast can be ridden. Mounting changes how you cross the world and where you can reach, so the moment a Beast hits adulthood, revisit old areas on its back. One wrong step can face you with something far more dangerous than expected, which cuts both ways: mounted exploration finds the secrets walking cannot.
5. Choose evolution branches deliberately. Will your companion rise as a ruthless Tyrant, a noble Monarch, or a cunning Archon? These are the paths the store names, and your training choices steer them. Decide what your team lacks, a damage tyrant, a supportive monarch, or a trickster archon, and raise toward that gap.

Beginner Mistakes to Avoid

That last row is the game's emotional mechanic. A Beast passing away is not a loss screen; it is a decision about who receives the orb. Players who plan inheritances around team needs turn every generation into an upgrade, and players who do not plan lose momentum at the worst time.

Core Mechanics Explained

The Orb Inheritance Cycle

Beasts are part of an eternal cycle: as they pass away, their acquired power lives on in mysterious orbs, and absorbing Beasts grow from that endless flow of hearts and souls. Strategically, this is the game's long-game economy. The power you pour into a beloved early Beast is never wasted; it transfers. Build lineages on purpose: a Tyrant line for damage, a Monarch line for resilience, an Archon line for utility, and pass orbs down each line so every generation starts stronger than the last.

Evolution Paths

Each of the 150+ Beasts follows a unique path shaped entirely by your choices and care, with Tyrant, Monarch, and Archon named as destinations. Care is the lever: feeding, training, and battle experience together decide which branches open. Watch what your Beast responds to, because the path you walk most is the path it becomes.

Tactical Battles

Combat is fast-paced and knowledge-driven. The store page tells you to use your knowledge and instincts to choose the right skills at the right time and dominate opponents. Expect timing windows and skill counters rather than raw level checks. Speed options for battles exist in the menu, which tells you the developers expect many fights and respect your time.

Riding and the Open World

Every adult Beast is rideable, and Yselion is a non-linear open world teeming with secrets and lurking dangers. Riding is traversal and trigger mechanic at once. Plan routes around terrain your mount handles well, and treat unexplored pockets as opportunities with teeth. The quest journal includes a map that tells you where to go next, so the game gives you a compass while leaving the route free.

The Bestiary and the Fallen Empire

The bestiary is the narrative spine: a tome preserving the forgotten lore of Yselion and the creatures that once walked alongside its people. Entries progress the mystery of the fallen empire. If you follow only one system, follow this one, because it converts wandering into story.

Advanced Tips

• Plan two lineages from your first egg. Decide early which Beast feeds a damage line and which feeds a support line. Inheritance planning across generations is where the real power ceiling sits.
• Scout mounted, fight dismounted. Ride to map edges and secrets, but dismount before dense encounter zones. Mounted mistakes trigger the page's one wrong step warning.
• Speed up battles you have outgrown. The battle speed option exists for the grind middle game. Use it, and save your attention for trials and new species.
• Idle the camp with intention. Idle mode lets your Beasts chill at camp while you take a break. Leave it running during real-life pauses; the game rewards the breath without punishing the pause.
• Use all three save slots as chapters. Before major choices, snapshot to a fresh slot. Evolution branches and exploration routes diverge, and three slots are enough to keep a regret door open.
• Demo-test your starter. The demo carries into the full game's systems. Test two or three starter Beasts and pick the one whose early skills feel readable to you, because battle fluency compounds.

FAQ

When does Astra Bestiary release? November 3, 2026 on Steam. A free demo is available now, and wishlisting is open.

What makes it different from other monster taming games? Three things: evolution branches (Tyrant, Monarch, Archon) shaped by your care rather than fixed paths, every adult Beast is rideable in an open world, and the orb inheritance system where passing Beasts pass power to the next generation.

How many Beasts are there? Over 150 fully animated Beasts at launch, each with its own evolution path.

Is there multiplayer? No. The store page lists single-player, with Steam Achievements, Steam Cloud, and three save slots.

Can my PC run it? Almost certainly. Minimum specs are any Intel/AMD processor, 4 GB RAM, and integrated graphics on Windows 10/11 with DirectX 10. Steam Deck is listed as compatible.

How does the orb system work? When a Beast passes away, its accumulated power is stored in a mysterious orb. Other Beasts absorb the orb and grow from that power, so each generation starts from a stronger foundation.

Do battles play in real time? No. Battles are fast-paced and tactical, decided by choosing the right skills at the right moments, with speed options if you want them faster.

What is there to do besides battles? Explore the non-linear open world on rideable Beasts, inscribe discoveries into the bestiary, chase the mystery of the fallen empire, customize your character, and enjoy idle camp mode between adventures.

Quick Reference Card

Astra Bestiary earns its slot in the taming genre with one idea: a Beast's life is a torch, not a candle. Raise with intent, ride with caution, and pass the torch stronger every generation.