Main task of the game is very simple such as all games of this category. You must hit a maximum number of targets. Time in the game is limited to 60 seconds. The number of cartridges is not limited. But you have only watch a rest of the cartridges in the clips.
“Street Gunner” has a very good graphics. Realism of the targets, dynamic shadows, special effects, explosions and glass shards at a high level. If you have android device with a high-performance CPU and GPU you can see maximum of special effects which are provided in the game. The program cutting most effects including shadows in low-performance devices. This optimization makes automatically and allow a high frame rate of rendering scene even on low performance devices.
By the way the minimum requirements for devices are supporting ARMv7 and android version 2.3.1.
Main task is not only shooting on maximum number of targets if we talk about the rules. You must do this with a minimal amount of misses. If you hit 3 times without missing each next target have a multiplier 2, five hits and more - multiplier 3 and ten or more - multiplier 5.
There is a leader board in the last version of the game where you can post your best score. But only 5 best shooters are visible at the top.