Impaler

Impaler is a fun game if you know what you're getting into. It's a simple enough arena shooter that plays fast and is short enough to ensure that you can squeeze in multiple runs in a short play session. The need to kill airborne enemies with a stomp can put a damper on things, but the rest of the gameplay is solid. Impaler is priced at $2.99, so it's worth a look for shooting fans who want a quick fix.