>>45449064Try Pokemon God of Arena. It's a Crystal rom hack focused on beating a battle tower-like facility (the only accessible areas are the arena and a small area beside it).
Pokemon are obtainable through gacha mechanics (you roll for random pokemon using ingame currency you get for winning battles at the arena).
It features physical/special split, EV system, some essential abilities, rating system (several tiers with increasing difficulty).
AI trainers use parties with optimized sets and sometimes are even annoying to beat (everything has coverage, focus sash, berries, etc).
Party building capabilities include:
all gen 2 Pokemon are obtainable through gacha rolls
all moves in the game are available as non-consumable TMs from the bag
all items that make sense in competitive are available in the only mart in the game
EV minmaxing is available (it consumes the ingame currency)
Some cons:
Unnecessary introduction battle with a minmaxed Eevee
The game doesn't acknowledge or reward you for beating it, after reaching max rating you can keep fighting indefinitely
All in all it's a good time killer that takes many hours to beat it.