I recently tried out 911 Operator and I went into this game thinking it wouldn't be that much fun, and wow was I wrong. Even though the game doesn't look very immersive, since all you're doing is staring at a map and telling your police, firemen and ambulance drivers where to go, as well as answer phone calls, the sound effects, and the phone calls just makes the game feel very much like you really are trying to help these people who are in need.
You can even equip your units with bullet proof vests, guns, medical kits as long as you have the money to afford it. And you can also buy new vehicles so you can reach more people when other units are already engaged with another incident. Honestly I really enjoyed this game. I will most definitely keep playing it. And for $1.49USD on the google play store, I think this game is well worth the money.