So game mode is like sandbox? I'm trying to understand what is happening when the firewall is on game mode.
If I'm reading the previous entries correctly, it's something like this.
When Comodo is in "game mode", it does the following:
1) It suppresses any alerts that might pop up, asking for information on whether or not to allow the game you're playing to perform various tasks - e.g., accessing the monitor/keyboard/mouse, connecting to the Internet, and/or executing other programs (such as an updater).
2) Any scheduled updates (e.g. virus definition downloads or program patches) are postponed so as not to interrupt the game.
3) While the game is allowed to perform whatever tasks necessary to run properly, anything else - such as new programs that are not part of the game, or old programs that have never been run before - are not
allowed to perform whatever tasks they might want to perform (so, if they want to access the Internet, the firewall will block them - but not the game).
(Disclaimer: I am not Comodo staff, this is merely a hypothesis based on observed behavior and official commentary. If I am mistaken, feel free to correct me.)