Once it loads up, you can redeem TDX codes simply by tapping the Twitter button on the right side of the screen. You’ll see a load of other buttons there, too. Type a working Tower Defense X ...

As the name implies, this Roblox experience puts you in all-out war as you fight to keep your tower. Mind you, given the goodies on offer from TDX codes, you might be able to afford to take some risks ...