So you can see the progress, I`ve made a little site:

http://norrish.force9.co.uk/robotron

Any of the fx or technique seen here that you want help with, please ask at the site address.
I might do a tutorial, but it won't be as nice as Travellers

There's a signup option on the site so you can be notified of significant updates.

{oh.. I`ve solved a few problems on the way, which some other people I have seen asking after: modify palette of source graphic, pixel based sprite collision problem etc.)