How were the Amiga versions of R-Type PC Engine ports?
R-Type 1 was made by Factor 5 using their Katakis/Denaris engine - Factor 5 wanted to release Katakis (a direct rip-off of R-Type) but Activision had the rights to R-Type and didn't allow them to release it, instead they gave Factor 5 the conversion job.
The team turned out a very playable version of R-Type but graphically it was significantly reworked from the arcade original (different aspect ratios, no backgrounds etc.) It was also a more complete port of R-Type than the PC Engine version (which only had half the levels of the arcade version - hence the PC Engine's R-Type 2 years before the offical Irem sequel). Later Factor 5 re-worked the graphics for Katakis and released it as Denaris.
R-Type 2 was handled by a different team (can't remember who) and was technically far inferior to the Factor 5 conversion (although it got a lot of good reviews).
Generally, the PC-Engine version of R-Type(1+2) was considered to be the most accurate conversion available... well, until MAME came along ;-)
