
异常 | Exception
Exception is a game about AI programming. During the game, the player assists the units to defeat their enemies in the virtual world. However, the player needs to control the units by programming instead of controlling them directly.
Developer
Publisher
Release
July 4, 2019
7 years and 31 days ago
Steam Reviews
Overwhelmingly Positive1,655 reviews97.3%
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Game contextLatest: IGF Team
| ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan. | Status | Notes Latest Contributor: IGF TeamEdit notes |
|---|---|---|
Updated: Jul 13, 2026Developer scaleThe operating scale of the game's developer. | ||
Updated: Jul 15, 2026Publisher scaleThe operating scale of the game's publisher. | ||
Updated: Jul 15, 2026Publisher statusHow the game's publishing relationship is classified. | ||
Updated: Jul 13, 2026Release statusWhether and how the game has been released. |
Media
8 itemsAbout the Game

Exception is a game about AI programming. During the game, the player assists the units to defeat their enemies in the virtual world. However, the player needs to control the units by programming instead of controlling them directly.
This is a challenging single-player game. In each level, the player needs to think about the strategy and program the units accordingly. The player needs to program different types of units to beat the level.

In a virtual world where everything operates steadily under an omnipotent system, you will play the role of an operator named 159, who oversees and maintains the system.
Nevertheless, there is no perfect system. You find an exception in the program one day. What is stranger is that the program made a request…
You will discover the secret underneath this cyber world.

“Exception” implemented a simple and unique graphical programming language for the game AI specifically.
This programming language is very simple to use, and anyone can easily get started with a little patience.

When you have finished the program for your units, they will fight automatically according to your instructions.
We can no longer intervene in the units once the battle begins, you need to restart the level if you want to modify the program.
Of course, constantly debugging the program is inevitable, and victory is born from failures!