This is the fist Alpha version of Doom: GBA Edition
Required: Zdoom or gzdoom and doom 1
Install: just drag the DOOMGBA.WAD on zdoom or gzdoom and select doom registert in the list and hit ok.
(if it's not appearing then move the DOOM.WAD from the doom 1 installation to the folder where zdoom or gzdoom is)
Looks promising
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