Outerworldly Physics

The original game had a bug, that was fixed with OXC, a memory limitation on the number of smoke/fire that could be generated during missions. Once the limit was reached, usually around 2-4 grenades, new smoke would not be generated until existing memory cells space became available again.

Is setting is to balance the restricting effect that this limitation had in smoke usage. It is still possible to create smoke clouds as in vanilla OXC but it will require use of more grenades to achieve the same vision restriction effect.

Mod discussion: https://openxcom.org/forum/index.php/topic,7152.0.html