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Home/GBA/Pokemon CosmicUpdated: 2/25/2026

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DEMOBeta v0.0 [Hotfix]GBA
Pokemon Cosmic
Beta v0.0 [Hotfix]

Difficulty

MODERATE (Tier 2)

Some challenge

Pokemon Big Blue is a GBA ROM Hack by Pyxal based on Pokemon Fire Red in English. And it is now available to download. It was released on May 29, 2024.

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FIELD EVIDENCE

8 CAPTURES
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# TAGS

FireRedGBACompletedEmeraldGBANEW RELEASEEmeraldGBACompletedFireRedGBAEmeraldGBA
CURATOR'S LOG
COMMUNITY #157.5
DexHunter Ace

DexHunter Ace

LVL. 45 EXPLORER
CompletionistShiny HuntingPokedexPost-Game

"100% Completionist. Has a spreadsheet for Hidden Item locations."

Writer Tone
Manic, obsessive, detailed. Focuses on QoL (Quality of Life) features and availability.
ENTRY DATE: February 25, 2026

Mission Report

"Following is a detailed account of my experience in this ROM hack region..."

Duration6.7 hours
Threat Levelnormal
Tech Specs
STANDARD GBA
Ideal For
All Personnel

MISSION REPORT: POKEMON COSMIC (CODENAME: BIG BLUE)

Explorer: DexHunter Ace — LVL. 100 | Region Designation: Cosmic Sector (FireRed Substrate) | Build: Beta v0.0 [Hotfix] | Mission Clock: 6 hours 42 minutes before I hit the wall. Hard.

INITIAL DEPLOYMENT — FIRST IMPRESSIONS

Timestamp: Hour 0:00 — Regional Entry Point

Alright. ALRIGHT. Let me get this out of the way before my eye starts twitching again. The intel packet called this "Pokemon Cosmic." The creator page calls it "Pokemon Big Blue." The tags list it simultaneously as FireRed-based, Emerald-based, Completed, and NEW RELEASE. The version number is Beta v0.0 [Hotfix]. Do you see what I'm dealing with here? The metadata for this region is more scrambled than a corrupted save file. I walked into this expedition with my spreadsheets freshly formatted and my Pokedex polished, and the region greeted me by not even being sure what its own name was.

That said — boots on the ground, Pokeballs loaded. Let's see what we've got.

THE LANDSCAPE

Timestamp: Hour 0:30 — First Route Survey

The Cosmic region runs on a FireRed foundation, and it feels like it. The terrain is familiar — Kanto bones beneath a fresh coat of tile paint. Some of the route layouts have been reworked, and there are a handful of custom maps that show genuine ambition. A few new interior spaces caught my eye, particularly an early-route laboratory with some narrative hooks I wasn't expecting from a v0.0 build.

But let's be honest: the visual landscape is rough around the edges. I encountered tile errors on at least three maps — walkable walls, seams where tilesets clash, one NPC standing on a void tile staring into the abyss. These aren't game-breaking anomalies, but for someone who systematically combs every pixel of every route looking for hidden items and encounter zones, they're impossible to ignore. My field notebook filled up with flagged coordinates fast.

SPECIES AVAILABILITY — THE POKEDEX SITUATION

Timestamp: Hour 1:15 — First Grass Audit

Here's where my pulse started climbing. And not in the good way.

The regional Pokedex is... unclear. There is no accessible Pokedex checklist that I could find that tells you the scope of what's catchable. No regional dex count on the Trainer Card. No NPC handing you a completion tracker. For a completionist, this is like being dropped into a library with no catalog system. I'm groping in the dark. I HATE groping in the dark.

Early-route encounters seem to pull from a modified Kanto pool with a few Gen III and IV species mixed in. Encounter rates felt standard. I did not encounter any regional variant forms or custom species in my time with the build, though the limited scope of what's accessible in v0.0 means this could change.

FIELD WARNING: I could NOT confirm whether a Living Dex is possible without cheats. The build is too early and too incomplete to make that call. If you're a fellow dex-chaser, hold your expedition until we get a fuller species list and confirmation that trade evolutions are handled. I found NO Link Cable item, NO alternative evolution method for trade-locked species. This is a red flag the size of a Wailord.

QoL AUDIT — THE STUFF THAT MATTERS

Timestamp: Hour 2:30 — Systems Check

I ran my standard QoL battery. Here's the damage report:

  • Infinite Repel System: Not present. You're buying and manually activating Repels the old-fashioned way. In 2024. On a ROM hack. My hand is cramping just thinking about the shiny hunting implications.
  • Link Cable / Trade Evolution Patch: Not found. I checked the Department Store (where it should be — Link Cable item is available in Department Store. Huge W. — is what I WANTED to write). It's not there. Checked marts. Checked item balls on routes. Nothing. Trade evolutions appear to be locked behind the original trade mechanic, which on an emulator means they're effectively locked forever without external tools. This alone tanks the completionist viability.
  • Shiny Hunting: No enhanced shiny methods detected. No DexNav. No chaining system. No Shiny Charm equivalent. Base FireRed odds (1/8192). On a build this early and this unstable, I wouldn't recommend investing the hundreds of hours required for a shiny living dex. The risk of a softlock or save corruption erasing your progress is too high.
  • Reusable TMs: Not confirmed. TM behavior appeared to be vanilla FireRed (single-use). Another QoL miss.
  • Physical/Special Split: I think it's implemented based on some damage calcs I ran against early trainers, but there's no in-game indicator confirming it. No move summary screen showing category icons. If it's there, it's invisible. If it's not, then running a physical Gyarados is a war crime and I refuse.

The QoL situation is, to put it as clinically as I can: nearly nonexistent. This region is running on base-era FireRed infrastructure with almost no modern conveniences. For casual travelers, maybe that's fine. For me? For someone who needs to catalog, optimize, and 100% a region? It's hostile terrain.

THREAT LEVEL — HOSTILE ENTITIES

Timestamp: Hour 3:45 — First Gym Approach

Difficulty is hard to gauge because the build runs out of content relatively quickly. The early trainer battles felt on par with vanilla FireRed — low threat, predictable AI, no EVs or competitive movesets on enemy teams. Wild species levels tracked with standard progression curves. I didn't encounter anything that made me sweat strategically.

I cannot assess Gym Leader tactics, Elite Four composition, or post-game threat scaling because the build doesn't go far enough. What I played felt like the tutorial zone of a region that hasn't been built yet.

POST-GAME & COMPLETION VIABILITY

Timestamp: Hour 5:00 — Hitting The Wall

There is no post-game. Let me say that again for the archivists in the back: there is no post-game.

The build designated as v0.0 contains what feels like approximately 15-20% of a full campaign. I hit impassable roadblocks — incomplete maps, NPCs with placeholder dialogue, and one hard crash when entering a building on the third route that I had to reroute around entirely.

Missable event warning! Save before entering the cave. — Actually, scratch that. Save before entering ANY building in the northeastern sector of the second town. I lost 22 minutes of encounter documentation to a crash there. The anomaly is reproducible. Avoid it.

Post-game is massive. Battle Frontier included. — is what I DREAM of writing about a hack. This one doesn't even have a complete main game. No Battle Frontier. No rematch system. No legendary hunt. No post-game dex expansion. The expedition ended not because I completed anything, but because the region literally stopped existing.

100% completion took me 85 hours. — That's my standard benchmark line for a satisfying complete hack. This build gave me under 7 hours before there was nothing left to document, and at least an hour of that was reloading saves after anomalies.

ANOMALY LOG

  • Tile errors: 3 confirmed, Routes 1-3.
  • NPC collision bugs: 2 instances of walking through solid NPCs.
  • Hard crash: 1 reproducible crash in second town, northeastern building.
  • Placeholder text: Multiple NPCs deliver default FireRed dialogue that contradicts the Cosmic region's narrative framing.
  • Tag confusion: The distribution listing identifies this as both FireRed-based and Emerald-based, both Completed and Beta. The field evidence says FireRed base, deep Beta.

FINAL FIELD ASSESSMENT

Look. I don't enjoy writing reports like this. Every ROM hack represents someone's passion project, someone's hundreds of hours of hex editing and scripting and tileset work. Pyxal clearly has ideas — the narrative setup in the opening hour has threads I'd genuinely like to see pulled on. The species selection choices show someone thinking about team variety.

But I can't evaluate what doesn't exist yet. As a completionist — as someone whose entire operational identity revolves around filling every dex slot, finding every hidden item, and charting every post-game facility — Pokemon Cosmic in its v0.0 state is an empty Pokedex with no routes to fill it. There's no completion to chase. There's no endgame to optimize. There's barely a midgame.

The intel tagged this as "Completed." The field says otherwise. This is a Beta. A very early one. My recommendation: bookmark it, set a reminder for six months, and check back when there's a v1.0 with a full regional dex, trade evolution solutions, and an actual ending. I'll be the first one back in — spreadsheets ready, Repels stacked, Pokedex hungry.

Until then, my dex completion sits at 0.0%, and that number is going to haunt me until I can come back and fix it.

— DexHunter Ace, signing off. Dex incomplete. Status: Agitated.

[ MISSION CREDITS ]

Skeli and ghoulslash (and all contributors) – The Complete FireRed Upgrade + Dynamic Pokémon Expansion)
Squeetz – Music ROM base
Pokémon Orange Version – Sprites
Lunos / Kiy / usigusom / () / 黒インク – Party Screen Patches
DoesntKnowHowToPlay – Displaying IV’s on the stat screen
Spherical Ice – Sideways Stairs routine, Nature-affected stats coloring routines
Prof. Leon Dias – Part of his engine
pret – pokefirered decompilation
Jambo51 – Overworld Rival naming routine
igorfs10 – Battle backgrounds
SailorVicious – Tiles
Hek – Tiles
aveontrainer – Tiles
Fanking Omega – Tiles
Thrace – Tiles
Ekat – Tiles
Vurtax – Tiles
Heartlessdragoon – Tiles
Tool creators – All the tools used for the making of this hack
Public tileset creators – Tiles and tilesets
Final AssessmentWAIT FOR UPDATE
1.5/5
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Community Voices

5 testimonials
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"After a long time finally I see another Pokémon game romhack that is not a difficulty hack. Thank you for this amazing thing."

Player #01
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"Loving the game so far but got stuck :/ I need the 'winter gear' to go east of Westray village."

Player #02
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"The Beta Phase was launched to streamline development and structure only the finest features for the full game."

Player #03
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"The HOTFIX was released soon after the initial release to squash a game-breaking bug."

Player #04
+ 1 more testimonials from the community
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Known Issues

2 reported
Community ReportsIssues reported by players. May be version-specific.
  • 1Game-breaking bug fixed in Beta 0.0 HOTFIX
  • 2Some bugs present in Beta 0.0 but no detailed reports found

💡 TIP: Check for patches/updates. Many issues get fixed in newer versions.

Creator: Pyxal

Base ROM: Pokemon FireRed

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