Your favorite old-school/arcade-style shooters
You know, games where the objectives are to kill everything that moves (and has a weapon), blow shit up and sometimes rescue hostages or gather some items. Post your favorites here!
My favorites:
Agile Warrior F-111X (PS1)
Black Dawn (PS1)
Krazy Ivan (PS1)
Mass Destruction (PC)
Cannon Fodder (almost all versions, except for Codemasters' 2001 GBC version. Also, fuck you Codemasters for cancelling the PSP installment)
MERCS (both arcade and Genesis)
Thunder Zone/Desert Assault (arcade)
Metal Slug X and 3 (NeoGeo)
After Burner 2 (Genesis)
Loaded (PS1)