OpenArena is by OpenArena Team and is licensed under GPLv2. Alternate Fire mod (by Neil "haste" Toronto) was downloadable for free; its included stuff here is shown as "fair use". Screenshot captured by The Gig.
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Primary feature of this Mod is adding a second function to every Q3A weapon. You must bind the...
Details Screenshot from OpenArena running Alternate Fire mod. Here you can see various kinds of...