Hello all, now going under the moniker SingleSparq (twas Macview).
Been working a while on this and still more to do but I thought I'd get going on showing the game case anyone's interested. Website will be done soon but till then there's youtube:

Hope ya like.
Comments
The spaceship crashing when you hit it into a radar dish - which makes your radar malfunction!
And the little train that re-supplies your missile banks.
A lot of effort's gone into this, and I wish you luck with it!
As an aside, with the extra screen estate, it would make an interesting iPad game - maybe give you more space 'above' so that you can have lots going on.
QS
Dr. Sam Beckett never returned home...
Twitter: https://twitter.com/Quantum_Sheep
Web: https://quantumsheep.itch.io
But iPad will have to wait (just like Both Canucks and UKers till May-ish if you want to get one).