Unable to use all (or most) of gym-retro games

[ZhuShaoQiang]

My working ENV

System: ubuntu 18.04

Version: python 3.6/3.7/3.8(3 envvironments all the same result), gym 0.25.2, gym-retro 0.8.0

How did I do?

I follow this guide to install gym-retro. and I successfully run the example game.

Problems I met?

Firstly, I imported some ROMs from the internet, for example the the 128 sine-dot, But I CANNOT import it:
when I executed

python -m retro.import Anthrox\ -\ Sine-dot\ Demo\ \(PD\).smc

the result was:

Imported 0 games

picture of text above

and the Atari games (more than 1000 games),I could only successfully import no more than 200 games, but I can make env no more than 100 games.

I executed:

python -m retro.import .

and results was:

Importing DemonAttack-Atari2600
.
.
Importing Pong-Atari2600
Imported 167 games

I wrote this script to get game status to judge whether we can make this env:

import retro

game_list = retro.data.list_games()

def main():
    cnt = 0
    for game_name in game_list:
        try:
            env = retro.make(game=game_name)
        except Exception as e:
            print(game_name, ": ", "no"+str(e))
        else:
            cnt+=1
            env.close()
            print(game_name, ": ", "yes")
    print("all: ", cnt)

if __name__ == "__main__":
    main()

and the results was:

...
YarsRevenge-Atari2600 :  yes
YoukaiClub-Nes :  no Game not found: YoukaiClub-Nes. Did you make sure to import the ROM?
YoukaiDouchuuki-Nes :  no Game not found: YoukaiDouchuuki-Nes. Did you make sure to import the ROM?
YoungIndianaJonesChronicles-Nes :  no Game not found: YoungIndianaJonesChronicles-Nes. Did you make sure to import the ROM?
Zanac-Nes :  no Game not found: Zanac-Nes. Did you make sure to import the ROM?
Zaxxon-Atari2600 :  yes
ZeroTheKamikazeSquirrel-Genesis :  no Game not found: ZeroTheKamikazeSquirrel-Genesis. Did you make sure to import the ROM?
ZeroTheKamikazeSquirrel-Snes :  no Game not found: ZeroTheKamikazeSquirrel-Snes. Did you make sure to import the ROM?
ZeroWing-Genesis :  no Game not found: ZeroWing-Genesis. Did you make sure to import the ROM?
ZombiesAteMyNeighbors-Snes :  no Game not found: ZombiesAteMyNeighbors-Snes. Did you make sure to import the ROM?
ZoolNinjaOfTheNthDimension-Genesis :  no Game not found: ZoolNinjaOfTheNthDimension-Genesis. Did you make sure to import the ROM?
ZoolNinjaOfTheNthDimension-Sms :  no Game not found: ZoolNinjaOfTheNthDimension-Sms. Did you make sure to import the ROM?
ZoolNinjaOfTheNthDimension-Snes :  no Game not found: ZoolNinjaOfTheNthDimension-Snes. Did you make sure to import the ROM?
all:  63

I checked all the exceptions, all exceptions were:

Game not found: xxxxxxxx. Did you make sure to import the ROM?

and found out that only 63 games were makeable.

Questions I want to ask!!!

How could I import those games to my retro?