Shellrazer is a game about a giant turtle with ridiculous weapons strapped to its shell. If that doesn't interest you I suggest you stop reading now, philistine.

The Silver Award-winning strategy shooter is currently free on the App Store and the Google Play Store, which means you can grab a chunky slice of goblin slaughtering for nothing at all.

The game features clever controls that make the action easy to handle on a touchscreen device, and there are more than 75 monster blasting levels for you to sink your teeth into.

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You'll unlock different champions to ride on your back as you play, and earn XP to make them tougher and more destructive as you blast your way through the ranks of the goblin army.

At review we called Shellrazer "a fine mixture of excellent presentation, surprising depth, and perfect control".

If that sounds like the sort of thing you'd like for free, you can grab Shellrazer from the App Store and the Google Play Store right now.