RPGXP
Pokémon Shadowside
121
15
Pokémon Dark Horizon
Category: RPGXP
Author: NikDie
Date: 2026-02-19
Description
It is a challenging, story-driven fan game that thrusts you into the harsh, unforgiving Aurelia Region, a land where the law of the strongest prevails and only Colosseum victors make a name for themselves. Set between Pokémon Colosseum and XD, you play as an experienced trainer navigating a world where the mysterious Cipher organization is secretly resurfacing. The game features Shadow Pokémon (with a boosted 1:100 shiny rate), double battles only, and a curated roster of Gen 1-4 Pokémon. With a deep quest system, a powerful Trainer Skill Tree, and extensive post-game content including a Rematchable Colosseum and New Game+, this is a must-play for fans seeking a difficult, atmospheric, and highly replayable Orre-like experience.
Features
- Double Battles Only: The game's core battle mechanic. Every single battle in the game is a mandatory Double Battle.
- New Aurelia Region (Orre-Inspired): Explore a brand new, harsh, and unforgiving original region near Orre, with a focus on Pokémon Colosseums.
- Shadow Pokémon System: The game features Shadow Pokémon, central to the story, with a unique capture and purification mechanic.
- Trainer Skill Tree: A unique progression system where you gain Trainer Exp by snagging Shadow Pokémon, allowing you to increase your trainer abilities.
- Massively Increased Shiny Shadow Pokémon Rate (1:100): Shadow Pokémon have a significantly boosted shiny encounter rate.
- Challenging Difficulty & Level Caps: Designed to be a tough adventure with specific level caps for story progression.
- Extensive Post-Game Content: The adventure continues after the main story with a well-rounded end to open plot lines, new challenges, and places to visit.
- New Game+ Mode: Replay the game with a New Game+ mode for added challenges and replayability.
- Rematchable Colosseum: Challenge the Colosseums again for grinding possibilities and experience (they give more EXP than normal battles).
- Curated Pokédex (Gen 1-4): The game includes all Pokémon from the first four generations, with adjusted movepools and stat values for enhanced viability.
- Custom EBDX Move Animations: Features custom battle animations from Elite Battle DX.
- Quest System: A robust quest system with a detailed quest log to track active missions.
- EV Reallocator: Reallocate your Pokémon's Effort Values (EVs) at any time.
- Multiple Player Outfits: Customize your character's appearance with multiple player outfits.
- Poké Spots: Unique locations in the overworld (similar to side areas in official games).
- Randomizer Mode: A built-in Randomizer mode for varied playthroughs.
- Nuzlocke Mode: A built-in Nuzlocke mode with its own set of rules and features.
- SIM Trainer Battles: A system for engaging in simulated trainer battles, likely for grinding or testing teams.
- Custom Poké Balls: The game includes unique, custom Poké Balls.
- Built-in Speed Up: The game includes a built-in speed-up button.
- Auto Save: An automatic save feature.
- Trophies System: A system for tracking and displaying in-game trophies.
- No Mega Evolution, Custom Pokémon, or Digimon: The game intentionally does not include these elements, focusing on a Gen 4 experience.
- No Exp. All/Exp. Share: The game does not include the modern party-wide Exp. All/Exp. Share.
- Trade Evolutions via Stones: Trade evolutions and a few other evolutions are now covered by the use of evolution stones.
- All Starter Pokémon Obtainable Later: You can trade for all starter Pokémon later in the game.
- Pokemon Location Guide: A "Shadow Monitor.pdf" provides locations for every catchable Shadow Pokémon.
- Missed Shadow Pokémon Catchable Later: If you defeat a Shadow Pokémon without catching it, you can later catch it from Miror B. in Colosseum rematches.
- Trainer Abilities Increase Shiny Chance: Trainer abilities can further increase the 1:100 base shiny odds for Shadow Pokémon.
- Unlockable Colosseum Cups: More cups in the Pokémon Colosseum are unlocked automatically by progressing in the story.
- JoiPlay/Android Compatibility: The game is playable on JoiPlay for Android, though with potential performance/graphic issues.
- No Difficulty Change Mid-Game: Once a difficulty level is set, it cannot be changed during the playthrough.
- Wiki Documentation: Extensive wiki documentation for items, evolutions, and other game information.
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RPGXP
Pokémon Dark Horizon
By NikDie
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CompletedMega EvolutionNew RegionExp ShareQoLRandomizer
PlatformRPGXP
AuthorNikDie
PostedFebruary 19, 2026
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Game Description
It is a challenging, story-driven fan game that thrusts you into the harsh, unforgiving Aurelia Region, a land where the law of the strongest prevails and only Colosseum victors make a name for themselves. Set between Pokémon Colosseum and XD, you play as an experienced trainer navigating a world where the mysterious Cipher organization is secretly resurfacing. The game features Shadow Pokémon (with a boosted 1:100 shiny rate), double battles only, and a curated roster of Gen 1-4 Pokémon. With a deep quest system, a powerful Trainer Skill Tree, and extensive post-game content including a Rematchable Colosseum and New Game+, this is a must-play for fans seeking a difficult, atmospheric, and highly replayable Orre-like experience.
Original Creator
Original Creator
Visit Source / Author Website
https://eeveeexpo.com/threads/9332/
Project Version (Completed) - 18/02/2026 - This is a fully playable release. The story in the new Aurelia region is currently playable from start to finish, including the Main Story and extensive Post-Game content. The game is still in active development, with more updates to come.
Key Features
Double Battles OnlyThe game's core battle mechanic. Every single battle in the game is a mandatory Double Battle.
New Aurelia Region (Orre-Inspired)Explore a brand new, harsh, and unforgiving original region near Orre, with a focus on Pokémon Colosseums.
Shadow Pokémon SystemThe game features Shadow Pokémon, central to the story, with a unique capture and purification mechanic.
Trainer Skill TreeA unique progression system where you gain Trainer Exp by snagging Shadow Pokémon, allowing you to increase your trainer abilities.
Massively Increased Shiny Shadow Pokémon Rate (1100)
Challenging Difficulty & Level CapsDesigned to be a tough adventure with specific level caps for story progression.
Extensive Post-Game ContentThe adventure continues after the main story with a well-rounded end to open plot lines, new challenges, and places to visit.
New Game+ ModeReplay the game with a New Game+ mode for added challenges and replayability.
Rematchable ColosseumChallenge the Colosseums again for grinding possibilities and experience (they give more EXP than normal battles).
Curated Pokédex (Gen 1-4)The game includes all Pokémon from the first four generations, with adjusted movepools and stat values for enhanced viability.
Custom EBDX Move AnimationsFeatures custom battle animations from Elite Battle DX.
Quest SystemA robust quest system with a detailed quest log to track active missions.
EV ReallocatorReallocate your Pokémon's Effort Values (EVs) at any time.
Multiple Player OutfitsCustomize your character's appearance with multiple player outfits.
Poké SpotsUnique locations in the overworld (similar to side areas in official games).
Randomizer ModeA built-in Randomizer mode for varied playthroughs.
Nuzlocke ModeA built-in Nuzlocke mode with its own set of rules and features.
SIM Trainer BattlesA system for engaging in simulated trainer battles, likely for grinding or testing teams.
Custom Poké BallsThe game includes unique, custom Poké Balls.
Built-in Speed UpThe game includes a built-in speed-up button.
Auto SaveAn automatic save feature.
Trophies SystemA system for tracking and displaying in-game trophies.
No Mega Evolution, Custom Pokémon, or DigimonThe game intentionally does not include these elements, focusing on a Gen 4 experience.
No Exp. All/Exp. ShareThe game does not include the modern party-wide Exp. All/Exp. Share.
Trade Evolutions via StonesTrade evolutions and a few other evolutions are now covered by the use of evolution stones.
All Starter Pokémon Obtainable LaterYou can trade for all starter Pokémon later in the game.
Pokemon Location GuideA "Shadow Monitor.pdf" provides locations for every catchable Shadow Pokémon.
Missed Shadow Pokémon Catchable LaterIf you defeat a Shadow Pokémon without catching it, you can later catch it from Miror B. in Colosseum rematches.
Trainer Abilities Increase Shiny ChanceTrainer abilities can further increase the 1
Unlockable Colosseum CupsMore cups in the Pokémon Colosseum are unlocked automatically by progressing in the story.
JoiPlay/Android CompatibilityThe game is playable on JoiPlay for Android, though with potential performance/graphic issues.
No Difficulty Change Mid-GameOnce a difficulty level is set, it cannot be changed during the playthrough.
Wiki DocumentationExtensive wiki documentation for items, evolutions, and other game information.
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