Here are some similar games to robot terminator I found
These games play similarly or have the same goal as robot terminator but most of these I have not played yet so if some of this games aren't similar to Robot Terminator I apologies. Also some of these games are firstperson but they still play the same or have the same goal as Robot Terminator.
https://store.steampowered.com/app/1212750/Undead_zombies/
https://store.steampowered.com/app/1168320/Zombie_valley/
https://store.steampowered.com/app/1145810/Desert_lost/
https://store.steampowered.com/app/1058500/Muscle_Car_Robot/
https://store.steampowered.com/app/1087040/Alien_invasion/
https://store.steampowered.com/app/1121770/Animal_war/
https://store.steampowered.com/app/1109700/Last_warrior/
https://store.steampowered.com/app/1278430/Warehouse_attack/
https://store.steampowered.com/app/1123060/Alien_Creatures/
https://store.steampowered.com/app/1245280/Skeleton_Warrior/
https://store.steampowered.com/app/1141700/Desert_monsters/
https://store.steampowered.com/app/1209060/Cowboy/
https://store.steampowered.com/app/1205020/Jack_troubles/
https://store.steampowered.com/app/1298700/patter_warrior/
https://store.steampowered.com/app/1288370/Desert_attack/
https://store.steampowered.com/app/1146350/Urban_riots/
https://store.steampowered.com/app/1214210/_/
https://store.steampowered.com/app/1245980/Forest_monster/
https://store.steampowered.com/app/1146780/Monster_planet/