Kopanito All-Stars Soccer is a PC game currently sold on STEAM and created by Merixgames. Regular price is $5.99 and currently on sale for $1.19 during the 2020 STEAM Summer Sale.
After many hours, I have found that the following can be modded:
Change audio sounds such as the menu music and sound effects. It must be in .ogg file format.
You can add UNLIMITED number of teams that I know of as I have not reached a limit that the game cannot take.
You can customize the uniforms of the teams including the player physical appearance as well.
You can add UNLIMITED number of stadiums that I know of as I have not reached a limit that the game cannot take.
You can customize the stadiums if you can operate software such as Photoshop or similar.
You can customize soccer balls, and also you can add UNLIMITED number of soccer balls.
Yes, you can unlock a team by renaming the "folder" where the specific team files are located. For example, team "usa" is locked, but if you change the folder name to "usa_u" then team USA will be unlocked in the game, at least that worked for me.
Same thing with stadiums, you can rename a stadium, and it will unlock in the game. There is a bit of modification to .json files to have the game show proper stadium names.
I won't say no to a drink.
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