If you run the exe you will get an error saying "SteamInternal_SteamAPI_Init" is missing. The game won't run. It's because they haven't properly copied the crack into game's folder. In other words, it's not your fault.
Here's how to easily solve the issue:
Find any other game that you have already downloaded. It should be a cracked game based on Steam release. In its main folder, copy the files "steam_emu.ini" and "steam_api64.dll" and paste them into "Night Feeder" installation folder. Override the files when asked. The game should run without any issues now.
I can see how that might be tricky. To my knowledge Steam_emu is usually found in games whose protection is bypassed and also not every game contains a compatible steam_api64.
I have uploaded both of these files on Mega so you can download and use hassle-free. These were taken from Wo Long. Hopefully sharing this is not against IGG's ToS. Regardless, be advised.
Here's how to easily solve the issue:
Find any other game that you have already downloaded. It should be a cracked game based on Steam release. In its main folder, copy the files "steam_emu.ini" and "steam_api64.dll" and paste them into "Night Feeder" installation folder. Override the files when asked.
The game should run without any issues now.
This is how your folder should look like:
I have uploaded both of these files on Mega so you can download and use hassle-free.
These were taken from Wo Long.
Hopefully sharing this is not against IGG's ToS. Regardless, be advised.