BGA Undo policy

Introducing "Undo" features in games can lead to bugs and/or bad interface design.

Please read the following carefully before implementing an Undo feature for your game.

What you must NEVER do

When you are restoring a game situation A from a game situation B:

• The Undo action must never change the active player. In other words, if player X clicks on "Undo", it must NOT make player Y active.
• If several players did game actions between A and B, you must NEVER provide an undo. In other words, an "Undo" action must NEVER force another player to redo some moves.
• No hidden (or private) information must have been revealed between A and B.
• No random event with a visible effect must have been triggered between A and B. This includes cards shuffling, dice roll, elements picking, ...