Glitch

A **glitch**, otherwise known as a **bug**, is a software anomaly that generally leads to unintended behavior in software, including the games of the *Drillimation Danmaku Universe*. They are typically triggered by mistakes in the game's code or by exploits that weren't anticipated by Drillimation Systems. Glitches generally have a wide variety of effects, such as disrupting the graphics or audio, the appearance of a glitch character or boss, corruption of save data, or a game crash where the game must be restarted to continue. When they are noticed, Drillimation usually fixes the glitch and releases a patch that corrects the error.

## Game Crash

   A **game crash** occurs when the game stops responding to the player's input due to a code error or hardware failure. When this happens, the player cannot move, attack, or use any buttons, and an error message appears showing the cause of the crash. The only way to resolve the bug is to fix the error that's causing it usually through a patch update. For example, in the first *Chuhou Joutai*, the game would previously crash after fainting due to the enemy not recognizing the player fainted object.

Crashes usually occur as a result of invalid or unrelated data being input into the game, or if an unhandled exception occurs while running the game. The most common causes of crashes include mods, pre-existing bugs, and updates. Attempting to modify the game can also cause crashes, and in rare cases corrupt save files. It is highly recommended that the player keeps a copy of their save data (located in the %localappdata%\gamename directory on Windows systems) to reduce the losses should a save file become corrupted as a result of a crash. Older computer systems and hardware are also prone to freezing and crashes due to them not being up to par with recent hardware or meeting the system requirements. In some cases, physical abuse, major force, or static electricity can cause the game to freeze and/or crash, and eventually lock up the system, where the player must restart their computer to continue.

## Softlocking

A **softlock** can occur where a glitch does not cause the game to crash but set up a situation where no buttons have any effect despite the game continuing to function as normal. When a softlock occurs, any background music will continue to play, sprites will still animate, and NPCs will continue to move, though any inputs will have no effect. In this scenario, the player must force quit the game and restart it.

## Lag

**Lag** is the delay between player input and on-screen action. Because the *Drillimation Danmaku Universe* is a danmaku franchise, any large amount of bullets on-screen can strain the CPU or RAM of the player's device, and in rare cases cause a system freeze that normally requires a restart. As a rule of thumb, depending on the processor of the device, they can only render a certain number of moving objects on-screen at any given time. Lag can also be caused if the player's device does not meet the system requirements, or if they have insufficient graphical and/or processing hardware.

## List

### *Chuhou Joutai* series

* List of glitches in Chuhou Joutai
* List of glitches in Chuhou Joutai 2: Paraided!
* List of glitches in Chuhou Joutai 3: Three Nights of Scarlet Abscess

### *Touhou Project NES Demakes*

* List of glitches in Touhou 1: The Highly Responsive to Prayers NES Demake
* List of glitches in Touhou 2: The Story of Eastern Wonderland NES Demake
* List of glitches in Touhou 3: The Phantasmagoria of Dimensional Dreams NES Demake
* List of glitches in Touhou 4: Lotus Land Story NES Demake
* List of glitches in Touhou 5: Mystic Square NES Demake

### Other games

* List of glitches in Touhou Kourinden ~ Mythos of Phantasmagoria
* List of glitches in Touhou Meijinka ~ Song of Divine Tempest

## References

1. ↑ https://drillimation.com/faq-troubleshooting/?frame-nonce=56be804857 FAQ/Troubleshooting - Drillimation Systems