You'd need to look at open source games: https://en.wikipedia.org/wiki/List_of_open-source_video_games
You'd need to look at open source games: https://en.wikipedia.org/wiki/List_of_open-source_video_games
Depends on the game. Making a mod typically has only a tangential relation to making an actual game - game devs need to write games in ways that make them possible to mod, often providing tools to do so easily.
Every few days I've been getting a popup asking me if I want to allow a program to run. The name given is just a long string of numbers. I can't find where the program is located to delete it. Seems like it's probably a malware of some sort. But I can't find it to get rid of it. Any ideas?
Have you tried running any anti-malware programs? I recommend trying Microsoft Security Essentials, Spybot S & D, and Malware Bytes anti-malware., in that order. I'd run all three (although not simultaneously) if I was experiencing something like this (they can catch something the others might miss.)
I would also google that string of numbers you've referred to, odds are it's already happened to someone else somewhere and there may be a discussion about it you can find.
I tried it too, but the file name is probably different for each virus for that particular reason. Googling "numbers" and ".exe" gives results.