Safe weapons
Tools theme
Weapons that should harm the player or their allies when employed improperly - such as grenades or other explosives - do not.
24
games
9platforms

WIN 2012-08-13

SNES 1993-06

WIN 2009-03

WIN 2009-04-15

GBA 2003-06-17

WIN 2016-07-11

WIN 2010-09-16

X360 2009-09

DOS 1993-10-10

WIN 2011-03-04

X360 2011-06

GEN 1994
The first video game about Safe weapons was released on June 1993.
Sigma Team, Kot in Action Creative Artel and Microsoft Studios has published most of these games
This covers even allies (though that is better covered with friendly fire tags), so you can freely shoot them or be shot by them in the back and nothing happens. Including the AI controlled opposing side if their otherwise harmful weapons do not harm their allies.