Good game systems do not just teach players what to press. They teach players how the world works. That difference matters because a player who only learns inputs can only follow instructions. A player who understands the model can solve problems the game has not explicitly explained yet. This is where Model Transferability becomes important...
A lot of difficult moments in games are not actually difficult. They are simply unexplained. The player enters a room, touches something they did not know was dangerous, and dies. A hidden sniper fires from outside the frame. A floor collapses without warning. An enemy suddenly becomes immune to the strategy that worked five minutes earlier. The game may technically be challenging the player, but the player is not being tested on understanding. They are being punished for missing information they were never given...
A lot of games give players choices. The problem is that not all choices ask the player to think. Some choices are simply buttons attached to pre-designed outcomes. Press this to distract. Press that to persuade. Select this option to set a trap. Choose this dialogue line to resolve the scene. These interactions can be useful, readable, and satisfying, but they are not the same as letting the player construct an outcome through the world. This is the difference between activation and construction. Activation is when the player triggers a designed outcome. Construction is when the player builds an outcome through interacting systems. Both can look like agency from the outside because both involve player input, but the player’s relationship to the result is completely different. One asks the player to select a solution. The other asks the player to understand the world well enough to create one...
