Submitted speedruns are typically performed on their native consoles. When performing a run of a PC game, the rules may mandate that certain computer configurations be adhered to. In general, SDA will not accept runs that are performed on emulators, as emulation can be influenced by the configuration of the computer being used. Furthermore, it is particularly difficult to verify whether or not a run performed on an emulator is tool-assisted. Nevertheless, SDA does permit the use of emulators in certain cases; submissions performed on the Game Boy Player, GameTap, and Virtual Console are allowed. Virtual machines and DOSBox are allowed in cases where an older PC game does not run properly on modern computers. Use of this software is reserved for specific circumstances and these submissions must adhere to several additional rules. Due to potential emulation inaccuracies, runs that utilize an emulator may be categorized separately from those of the original release.