Hardware & software:
- Logitech Slim Combo for iPad Pro at http://www.logitech.com for $129 – $149 from Leo Laporte.
- beaTunes at https://www.beatunes.com for $34.95 from Andy Ihnatko.
- Hype 3 at http://tumult.com for $49.99 from Rene Ritchie.
- Unity3d at https://unity3d.com for free – $125/month from Alex Lindsay.
- Unreal Engine at https://www.unrealengine.com for free from Alex Lindsay.