Sonic Adventure 2: Alternate has a few notable bugs/crashes that are due to some errors or complications in the utilization of the character select mod. Some errors are relatively harmless, albeit awkward, and some result in crashes of the game in general.

🟡Back Ring in Hunting Levels: [Mildly Affects Gameplay] In the M2s of Hunting stages, the Back Ring that typically spawns at the starting location of the level if the player takes damage does not occur. This prevents the reloading of stages on the same life and prevents the Life underflow glitch in security hall.

🔴 Hunting Turnaround Crash: [SEVERE] When playing with the Character Select mod enabled, there's a serious Bug that occurs when Gliding to the boundaries of the Hunting Stages. The game will freeze and complete crash. This will occur with most characters and the cause of this is unknown. A͟v͟o͟i͟d͟ ͟g͟o͟i͟n͟g͟ ͟t͟o͟o͟ ͟c͟l͟o͟s͟e͟ ͟t͟o͟ ͟t͟h͟e͟ ͟e͟d͟g͟e͟s͟ ͟o͟f͟ ͟t͟h͟e͟ ͟l͟e͟v͟e͟l͟!͟

🔴Upgrade Crashes: [SEVERE] If you enter a level with certain 2P mode characters without upgrades enabled, the game will crash if the characters approach a certain range of the upgrade ring's location. Ensure if you are loading into the stages with outside characters that the upgrade in said levels are already collected manually or with Upgrade Remover.

🟢SA2A UI Menu 4x3: [Harmless] For some reason, when trying to change the menu screens with the Battle DLC enabled, the background images wont load if you are playing the game in a 4x3 aspect ratio. Files have been changed but the cause of this error is unknown and will hopefully be fixed in the future.

🟢Sound Effect Bug in Green Hill & Chao Garden: [Harmless] When loading into Green Hill Zone or the Chao Garden with the 2P Characters, the game compensates for missing/nonexistent sound files by playing random sounds or voice clips when doing certain actions (attacking, jumping, digging, taking damage). This also occurs when playing as Mechless Tails & Mechless Eggman in levels. The error does not impede gameplay, it just can be seen as annoying at most.

🟢Music reload increase: [Harmless] Sometimes when collecting speed shoes/invincibility, the stage ADX will increase in volume compared to how it played previously. At most this can just be mildly annoying depend on the volume level of the sa2app exe.

If more bugs/errors are discovered and reported, they will be added to this list in the future. If you have encountered something you wish to report, please leave it below and explain the cause.